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Boric Acid as Eye Wash

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Q. My father mixes boric acid purchased at Phar Mor mixes it with water to wash his eyes is this safe even though it is poison?

George Kipples
- Naperville Illinois


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Hi George. What does the label say? -- I'm making the point that things should be used only for their intended purpose, not really asking for further detail :-)

pic of Ted Mooney Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

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A. Boric acid has been used for many decades as an eye wash. When used, very diluted in water, it can be used as an emergency eye wash or as eye drops for eye infections. It can also be used, safely, as a pesticide. It is poisonous to bugs...not to humans and can be used as a pesticide around children. Boric acid also can get through many materials, such as wood and can have lasting effects as a pesticide. It is safe for your father to use this as an eye wash. This method was popularized in the 40's and 50's so, his mother probably showed him this. However...why is he using this everyday?

Nellie Eshleman
- Gainesville, Florida


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Q. I've used boric acid solution for my son when he was an infant (he's now 16). I now have another infant son with an eye infection. I can't remember how much boric acid to use. Anyone?

Patricia Howard
- Fullerton, California


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Patricia, I really think you should ask your doctor or a pharmacist. If you get an answer here, from a stranger with no qualifications and maybe even with a fictitious name and an intent to harm, are you really going to put that in your son's eyes?

pic of Ted Mooney Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey

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A. Hi,

Last year I had an infection in my eye, I don't know what it was, probably a cold or conjunctivitis. My friends mother used boric acid with water, about half a teaspoon in a cup of water and put it in my eye. Cleared up in about two days. My friend uses boric acid to kill cockroaches , he puts it around the house. It is poisonous to bugs, but not to humans.

Bye,

Hazel O'Mahony
- New York, New York

Boric Acid Powder





Ant killer


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A. Boric Acid solution (mix 1 tsp powder in 1 pint boiled water; let cool completely before using) has been used for decades in treating minor eye irritations/infections. Its routine use disappeared with the advent of antibiotics eye drops/ointments. Boric Acid is still a very useful therapy in non serious cases. It is much better than vasoconstrictors (used today for minor irritations), and hundred times less expensive. Prepare a solution, keep it in a closed glass or plastic container, and use it when needed with an eye cup , Q-tip or eye dropper several times a day.

Roberto Lancellotti Maryland
- Burlingame, California


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A. Woah now I came across this thread while searching the web on HOW poisonous boric acid is because it IS poisonous to humans if ingested.

The benefits of using boric acid to control bugs over using Raid or similar product are:

1. Much cheaper. You can buy boric acid powder and mix it with something to make your own bait or buy already prepared harris roach tablets at any grocery store for $3.

2. Bugs do not develop long term resistance to boric acid. The same boric acid has been used for centuries while the chemical insecticides have to constantly change their formulas because bugs become resistant.

3. LESS poisonous if ingested and not poisonous through skin. Chemical insecticides can poison you through contact, but not boric acid. It is harmful to bugs through contact but not to humans and pets. According to Harris Roach Tablets web site, you can eat a whole tablet and it wouldn't harm you. But if you eat a bunch you'd most definitely die. But a child or a dog or a cat wouldn't have an urge to eat a bunch because it tastes awful.

It is safe as an eyewash and in fact is the same thing contained in over the counter Bausch & Lomb eye wash that can be used daily according to the bottle. I have no idea what concentration, although you'd probably want to use distilled water.

Peter Vazquez
- Miami, Florida


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Q. We used a Boric Acid eyewash for our toddler (now 16) with good results. I now am caring for a litter of 6 week old kittens who are recovering from an upper respiratory infection. They have received expensive prescribed eye drops for about two weeks. There is some residual eye inflammation left. Does anyone know if this same eyewash could be used for the kittens?

Thanks,

Rose Gilbert
- San Diego, California


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A. I hear all the time that Boric Acid is poisonous, however Boric Acid is in my contact lens solution made by Bausch & Lomb.

Barbara Gallegly
- Hadley, Michigan

Bausch & Lomb Eye Wash


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A. My mother used Boric Acid Solution (not the powder, must be the solution). She mixed 50% Boric Acid Solution to 50% water as an eye wash when we were children and it worked every time clearing up "Colds" in our eyes. I have also used this today. Not only in my children, but also as an eye wash for my dogs during the winter months when they get colds in their eyes. And yes, boric acid can be used as a pesticide. It is slow acting but very effective.

Lisa Wright
- Upland, California


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Q. I searched in many shops, but I can't find boric acid... Can someone tell me where is it available?

Thanks,

Lea

Lea Milic
- Van Nuys, California


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A. Boric Acid powder can be purchased at virtually any drugstore. I bought a bottle at Rite-Aid yesterday for my kitten. It comes in a bottle 5-6 inches tall, similar to the type of container in which you might purchase fish-oil capsules or vitamins. It is very inexpensive and effective.

Jodee Gilbert-Uhlman
- Rosamond, California


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A. I am 52 years old ... and my mom used boric acid as an eyewash to clear up sties, etc. for us as children. I came to this website today to find info about the water-to-powder mixture and reading one of the responses answered my question right away.
I had difficulty finding boric acid, and the pharmacist within a local Kroger grocery store ordered it for me at $5.99 for 6-oz. powder canister. The pharmacist says it will not harm humans, is good as an eyewash.. because of its antibacterial qualities.
Be sure to boil the water, let it cool, then add the powder mixture. I'm using this to clear up an eye infection in my pet dog.
It really works great !

Gwen Huskey
- Nashville, Tennessee


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A. Boric acid is a poison... says so right on the package I just bought, so be careful!

Brian Canali
- Venice, California


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A. Thought you all might like some technical information on this subject.. By J.R. Blasius Borates, including boric acid, have been used since the days of the ancient Greeks for cleaning, preserving food and other everyday activities.

Today, boric acid is found in more every day uses and products than ever before. Among them are eye wash solutions, flame retardants, insecticides, glass products and fertilizers. And yet with all these uses over all these years, the question, "Is boric acid toxic?" seems to be raised with regularity every year. Asking "How toxic is boric acid?" is sort of like asking "How hot is hot?"

The answer clearly needs to be qualified...and, yes, scientists have figured out a means to compare one chemical to the next. In fact, on this scale, scientists and/or regulators can compare most anything that can be swallowed, inhaled or put in one's eyes. The scale I am referring to gives a figure known as the LD50 rating - a dose that would cause the deaths of 50 percent of a specific animal population.

One method used to determine the LD50 rating for most substances is via laboratory-controlled oral doses to rats. The following table lists the LD50 (oral-rat) for several common substances as published by the Registry of Toxic Effects of Chemical Substances.

Substance LD50 (milligrams of dose /kg of body weight) Aspirin 1,000 Boric Acid 2,660 Table Salt 3,000 Boron #10 3,500 Baking Soda 4,200 Grain Alcohol 14,000 Based on this data, boric acid and Boron No. 10 are not significantly different in toxicity than common table salt. In addition, both boric acid and Boron No. 10 are less toxic than aspirin. The greater the LD50 rating the safer the substance is.

When compared to these common household items, boric acid and Boron No. 10 are not particularly dangerous, and, if used properly, will not cause poisoning. It is important to remember that there have been no known deaths resulting from the use of boric acid or Boron No. 10 in mattresses or upholstered furniture or even in their use as an insecticide.

So are borates toxic?
Certainly, and so is virtually every and anything else you come in contact with. It is simply a matter of quantity, and the simple fact is that exposure to cotton batting treated with borates is a safe exposure that should not cause alarm in anyone.

In fact, the levels at which these borate products are present in cotton batting make them very effective control agents against dust mites, mold and mildew, all of with can develop in any mattress of any construction. Controlling the spread of dust mites, molds and/or mildews makes for a healthier home and less of a chance for the homeowners to develop allergies.

If you believe aspirin or table salt is dangerous, poisonous or in some other way life threatening, then you probably should not use borates.

If, on the other hand, you can rationally look at the comparative data, you will probably come to the conclusion that boric acid and Boron No. 10 are among the safest of choices for making cotton-batting flame retardant.  

National Cotton Batting Institute

Wilfred Smitherman
- Killeen, Texas


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A. Dear Ms. Howard,

My mother always washed her infant children's eyes with boric acid solution in the 40's and 50's. She had five children and never had a problem with it. The doctors at that time recommended it. I followed suit and washed my three children's eyes with it. When they were infants the tear ducts would get clogged and there would be some pus. A little boric acid solution on a fresh cotton ball a couple of times a day would cure the problem. I also used it on our pet dogs and a litter of cats over the years. Works like a charm. We always boiled one cup of water and then added one teaspoon of boric acid water and stirred. It makes a mild solution. I would make a fresh cup after a couple of days. I would keep it in a cup with a saucer on top to keep it clean at room temperature. The 50% boric acid to 50% water solution that I read about in another email sounds too strong to me. Guess you have to use your judgement. Good luck.

Fran Morabito
- Brooklyn, New York


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A. I just want to say that the best price I have found for my BA is the one pound plastic bottle of "ENOZ" ROACH AWAY in the garden supply at any Wal-Mart store. Price is only US $2.27.

Melvin Johnson
- Clearwater, Florida


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Q. I have read all that has been posted about Boric Acid. I am looking to see if anyone has used Boric Acid on Boer Goats as treatment for the eyes? I have a baby Boer with a mild eye infection and several old timers have told me to use it.What do you think? Has anybody out there ever heard of such a thing? Desperate!

Robin Arrowood
- Powder Sprins, Tennessee


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A. Just adding my 2 cents worth here. In the late 1940's and early 50's, my mother-in-law was a nurse........head of pediatrics at the main hospital in Chicago. She gave me her recipe for a boric acid solution when my kids were small. So, yes, a boric acid solution was and is an accepted and useful medication for irritated eyes. Her "recipe" is for a 2% solution: 1 tablespoon boric acid to 1 pint of purified water (boiled or distilled). Also, if it doesn't clear up the problem, see a doctor.

Donna Winder
- Pine River, Minnesota


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A. For use as an eyewash it would be wise to obtain medicinal (USP) grade boric acid. A technical grade meant for insecticide may have impurities you wouldn't want in your eye. I believe a nearly saturated solution is what you want, but without any undissolved crystals.

John Reed
- Oak Ridge, Tennessee


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thumbsup2Very interesting on boric acid for eye wash. I was at the local Rite aide today and the pharmacists (2) didn't know very much about this treatment. In fact I was in the eye drop section..didn't read what was in the eye drops...and they said there is nothing in that section for "cold in the eyes". Well they are younger and didn't have the wise mothers of the 50's....haha So they referred me to the first aid section to get boric acid powder. Thanks to your website as I didn't know the mixture for homemade solution.

Kay French
- Lebanon, Oregon


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thumbsup2My college daughter called me tonight because her boyfriend has an eye infection from a cold. First thing I told her was to get boric acid. HAHAHA..she did think at first I was crazy but I sent her some of the post from here. If she didn't believe me she did believe all of you. I remembered using it on the kids when they were little. However, I did tell her washing their hands and not touching the eyes was the best. Just wanted to share this. Patticakes

Patti Forthey
- Illinois


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A. If you look up Boric acid in RTECS (Registry of Toxic Effects of Chemical Substances) you will find the complete test data which also list the LDLO/LCLO - LOWEST PUBLISHED LETHAL DOSE/CONC (or the lowest dose known that caused death). The results are as follows:

Man
LDLo - ROUTE: Oral; DOSE: 429 mg/kg [Journal of Toxicology, Clinical Toxicology. (Marcel Dekker, 270 Madison Ave., New York, NY 10016) V.19- 1982- (31,345,1993)] TOXIC EFFECTS: Cardiac - Other changes Kidney, Ureter, and Bladder - Changes in tubules (including acute renal failure, acute tubular necrosis)

LDLo - ROUTE: Skin; DOSE: 2430 mg/kg [JAMA, Journal of the American Medical Association. (AMA, 535 N. Dearborn St., Chicago, IL 60610) V.1- 1883- (128,266,1945)] TOXIC EFFECTS: Gastrointestinal - Hypermotility, diarrhea Skin and Appendages - Primary irritation Nutritional and Gross Metabolic - Body temperature increase

LDLo - ROUTE: Unreported; DOSE: 147 mg/kg ['Poisoning; Toxicology, Symptoms, Treatments,' 2nd ed., Arena, J.M., Springfield, IL, C.C. Thomas, 1970 (2,73,1970)]

Woman
LDLo - ROUTE: Oral; DOSE: 200 mg/kg [Lancet. (7 Adam St., London WC2N 6AD, UK) V.1- 1823- (2,162,1917)]

TOXIC EFFECTS: Behavioral - Fluid intake Gastrointestinal - Hypermotility, diarrhea Gastrointestinal - Nausea or vomiting

Infant
LDLo - ROUTE: Oral; DOSE: 934 mg/kg [JAMA, Journal of the American Medical Association. (AMA, 535 N. Dearborn St., Chicago, IL 60610) V.1- 1883- (90,382,1928)]

LDLo - ROUTE: Subcutaneous; DOSE: 1100 mg/kg [U.S. Army, Chemical Corps Medical Division Special Report. (Army Chemical Center, MD) (#2,1950)] TOXIC EFFECTS: Behavioral - Tremor Gastrointestinal - Hypermotility, diarrhea Gastrointestinal - Nausea or vomiting

LDLo - ROUTE: Skin; DOSE: 1200 mg/kg [JAMA, Journal of the American Medical Association. (AMA, 535 N. Dearborn St., Chicago, IL 60610) V.1- 1883- (129,332,1945)] TOXIC EFFECTS: Behavioral - Convulsions or effect on seizure threshold Skin and Appendages - Dermatitis, other Nutritional and Gross Metabolic - Body temperature increase

Child
LDLo - ROUTE: Skin; DOSE: 4 gm/kg/4D [Muenchener Medicinische Wochenschrift. (Munich, Fed. Rep. Ger.) V.33-115, 1886-1973. (52,763,1905)]

LDLo - ROUTE: Skin; DOSE: 1500 mg/kg [Quarterly Journal of Pharmacy & Pharmacology. (London, UK) V.2-21, 1929-48. For publisher information, see JPPMAB. (6,714,1933)]

TOXIC EFFECTS: Sense Organs and Special Senses (Nose, Eye, Ear, and Taste) - Conjunctive irritation Lung, Thorax, or Respiration - Respiratory depression Gastrointestinal - Hypermotility, diarrhea

While boric acid when used correctly is great stuff, it most certainly can be toxic even fatal. SO BE CAREFUL not to keep this where young children can get to it! And read the warnings on the package!

Tammy Steinert
- Norfolk, Virginia


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thumbsup2I WAS SO HAPPY TO FIND THIS SITE WHICH GAVE ME THE "RECIPE" FOR A 2% BORIC ACID SOLUTION. I HAVE USED A SOLUTION FOR YEARS FOR "SWIMMERS EAR" THAT CONSISTS OF 2% BORIC ACID AND ALCOHOL. AS I CURRENTLY HAVE A VERY PAINFUL EARACHE AND HAVE NOT BEEN ABLE TO FIND MY "REMEDY" I WAS VERY HAPPY TO FIND THIS SITE WHICH ENABLED ME TO MAKE MY OWN.........THANK-YOU!

C.WILSON
MEDICAL - CALIFORNIA


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A. My local pharmacist just advised me to use one tea spoon of boric acid in a quart of water for kittens eyes that are infected. Her caution was not to keep the solution any great length of time in storage. Make new when needed.

Gary Beckwith
- McGill, Nevada


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Q. I have seen recipes from 1/8 Tbsp to 1 Tbsp mixed with 8 oz boiling water to clean eye stains from persian cats. Never mentions putting it in their eyes, just wiping the stains on the outside. However, all breeders and my vet say it is ok to use the same type saline solution I get for my contacts as an eyewash for my persians. Think I'll start with the 1/8 tsp as I'd rather have a little brown under their eyes that hurt them. On the bug stuff.... Me with cats that go outside in my yard a couple hours a day, how does one use the boric acit as pest control. Mix in a sprayer - has anyone with pets used this and if so what mixture?

Mermaid Mania
computer - Autsin, Texas


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thumbsup2Thanks to this website for the helpful information. I was wary at first on using Boric Acid for my girlfriend's new kitten. Now I can feel comfortable using the solution for an eyewash.

Richard Greighn
- Lapeer, Michigan


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A. I have used Boric Acid for conjunctivitis (pink eye) as well as cats, kittens, dogs and puppies. The instructions on my container from Rea and Derick is as follows- Directions: To make a solution, dissolve one tablespoon in a pint of boiled water. If intended as an eyewash, prepare a solution by boiling in water and store in a sterile container. Prepare sufficient quantity for one day's use and discard unused portion. Based on the recommended ratio.... I prepare 1/2 cup boiling water with 3/4 tsp Boric Acid (3 1/4 leveled teaspoons) or 1 cup boiling water with 1 1/2 leveled teaspoons Boric Acid. Err on the side of using less Boric Acid. I dispose of remainder after 24hrs.

Wash the container, measuring spoons, plastic stirring utensil, and eyewash cup in soap and water. Then sterilize all above and place on a paper towel.

I sterilize my 1 cup Pyrex measuring cup by pouring boiling water inside and outside thoroughly. I then boil 1 cup of water (preferably distilled or sterile water, but I have had no adverse affects with well water) in the sterilized cup with the Boric Acid. Cool before use. A saturated cotton ball will work, but I prefer the eyewash cup available at a pharmacy.

I used the same proportions for pets. (Perhaps I was incorrect but within 3-4 days their eyes clear up.) If in doubt call an older veterinarian who is more familiar with Boric Acid usage.

Tonight my pharmacist mentioned his sister uses the Boric Acid solution for irritated eyes from allergies.

If someone has used Boric Acid as a pesticide, please advised ratio and proper usage against what insects, etc.

Thank you.

Marilyn Mosher
- Breesport, New York


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A. I have used the following as a very effective control for ants. Ant bait recipe: 1 tsp boric acid (readily available at pharmacies) 6 tbsp sugar (white) 2 cups boiling water add first two ingredients to boiling water. Stir well. Cool. Dip cotton balls into solution and drop into a plastic container that has holes punctured into sides along bottom of container (to allow ants in and out). Put the lid back on to keep out wasps, bees and to prevent evaporation. Place the container along the regular path of ants. Check the balls every few days and remoisten as required. Keep using as long as ants continue to appear.

Carole Myers
- North Bay, Ontario, Canada


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A. MY COCKER SPANIEL HAS CONSTANT EAR INFECTIONS, YEAST INFECTIONS, DROPS, SPRAY, POWDERS AND ETC.,I BOUGHT FROM MY VET, DID NOT CLEAR IT UP, ONLY TEMPORARILY. MY NEW GROOMER TOLD ME TO GET BORIC ACID, MIX ABOUT 1 TSP. WITH JUST A FEW DROPS OF WARM WATER TO MAKE A PASTE, NOT RUNNY AND NOT STIFF, MIX WELL TO GET THE BC INTEGRATED WITH THE WATER, I USE MY FINGER IN A SMALL GLASS BOWL. APPLY WITH A COTTON BALL IN THE EAR GOOD. SHE DID THIS THE DAY I HAD HIM GROOMER AND THAT NIGHT THE REDNESS HAD ALMOST GONE. SHE SAID TO USE IT ONCE A DAY FOR FIVE DAYS AND I COULDN'T BELIEVE HOW WELL HIS EARS LOOK NOW. SHE SAID TO APPLY EVERY TWO OR THREE DAYS FOR THE NEXT WEEK, THEN ONCE A WEEK AFTER THAT. HIS EARS LOOK BETTER THEN EVER, THIS SURE DID THE TRICK. COCKERS ARE SO PRONE TO THIS INFECTION AS THEIR EARS ARE VERY HEAVY AND AIR CAN'T GET IN THEM TO KEEP THEM DRY.

Jean R. Keith
- Goochland, Virginia


November 23, 2014

A. All we had for an eye wash in the 50's was Boric Acid. My Grandma even used it on kittens.

brook gowin
- troutdale, or multnomah

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