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Discussion on Use of Sevin (Carbaryl) on Horses
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Member:
Terrilyn
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Posted on Tuesday, Jun 29, 2004 - 11:13 am:
I was unable to find anything on this particular chemical on this site regarding safety of use on horses. Is it acceptable? Has anyone used it? Thanks!
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Member:
Apcohrs
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Posted on Tuesday, Jun 29, 2004 - 3:51 pm:
ON horses?? For what? As a fly spray???
I'd say emphatically not.
However, it is almost mandatory to use it to kill blister beetles if you are raising alfalfa in the SW US. The directions say to spray at least 7 days before harvesting to minimize residuals. But I would NEVER spray ON the horse.
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Member:
Terrilyn
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Posted on Tuesday, Jun 29, 2004 - 4:07 pm:
I seriously doubted it would be an option, but a friend of mine has a horse that is simply miserable from sweet itch during our long, hot Virginia summers. She is desperate. She asked me to post the question; I expected to get a strong negative response.
I did some poking around looking for info online and was surprised at what I read. There was a post on "epinions" that rated the effectiveness of Sevin Dust. These folks used it on their dogs, cats, and horses. They put it in a mason jar and poked holes in the lid and sprinkled away, but cautioned that if used on a windy day, it would get all in your face....I was horrified! There are actually some sites stating that vets have said it is safe to use it on animals. But after looking at an extremely informative site on pesticides (https://www.pesticideinfo.org/Index.html), I'd highly question its use on animals. I doubt my friend decides to use it on her horse. (She's an environmentalist!) 
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Member:
Terrilyn
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Posted on Tuesday, Jun 29, 2004 - 4:17 pm:
This document from a Canadian equine veterinarian endorses Sevin dust as a treatment for lice.
https://www.gov.on.ca/OMAFRA/english/livestock/horses/facts/info_lice.htm
Wonder how often one can use it safely? Another fact sheet on carbaryl states it is of low toxicity to mammals and not considered an oncologic (sp?) agent.
My friend was referring to the dust, by the way, and not to a spray.
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Member:
Kari
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Posted on Tuesday, Jun 29, 2004 - 6:55 pm:
Never used it on horses but I used to sprinke it in and around my dog house to control ticks and fleas. Never had a problem.
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Moderator:
DrO
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Posted on Thursday, Jul 1, 2004 - 8:34 am:
Hello All,
Sevin is a formulation of carbaryl (a carbamate insecticide) for use on plants to kill pests. It also is a time honored way to control fleas and ticks in dogs. I have used it many, many years ago as such and always had dissapointing results.
Frontline® is the only way to go to control fleas and ticks though a bit pricey it is guaranteed to work if used properly.
Carbamates are of low toxicity in mammals so probably can be used safely on horses but I do not know it for a fact. If I remember correctly it does potentiate organophospahte insecticide toxicity so should not be used in combination.
DrO
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