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Guinea Pigs/Guinea pig has mites


Can I use pyrethrum on  my Guinea pig to get rid of the mites.
I took him to the vet and he told me because he was to skinny he
does eat and drink.

so I think its the mites that is making him lose the weight
please help


Yes you can use Premethrin on your pig. Mites don't typically cause weight loss unless there is such a heavy infestation that it has gotten systemic. I don't exactly understand what it is the vet told you, but if he is very thin and emaciated any kind of treatment might be inappropriate.

If he has mites you should see evidence in the form of chewing spots on his coat. Mites usually run to the top of the back where the pig cannot reach. As a result of trying to bite them the pig chews off a 'v' shaped pattern on top of the back. Since the mites are too tiny to see with the naked eye we have to go by the symptoms we can see.

My concern is that your vet felt he was perhaps not in good enough health to tolerate the treatment. However, if he's that thin he's in danger anyway so the treatment might be his only hope if this is truly mites. I would suggest the Adams dip rather than the spray.

Before you start any treatment at all would you be able to send me a picture of him so I can see what the vet's thinking might be? This may be something far more serious than just mites. Although Premethrin is relatively safe to use any kind of treatment can be detrimental to a sick animal.  

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Pat VanAllen


As is sometimes the case, people in urgent need of information have a higher degree of expectation than those of us as experts are able to give. The experts on this site do their best to give the most accurate and responsible answers possible. We ask that you remember that it is not our intention nor place to criticize the professional advice given by your veterinarian, nor is it appropriate for us to comment on the correctness of a diagnosis made by a licensed physician. Our knowledge is experience based. Although many years of breeding and showing cavies gives me a wealth of experience it cannot change the fact that we as experts are not veterinarians and therefore may occasionally have to reject questions that appear to be asking us to criticize advice given by the licensed professional. Having raised and exhibited cavies for many years I have extensive experience in cavy care and husbandry. I currently have an active breeding program for pedigreed show animals but do not encourage backyard breeding for inexperienced owners. Although I don't encourage breeding for fun I'm always happy to answer any questions from an owner who is in sincere need of help. Pet owners wanting to breed should understand that even experienced breeders have litter losses. The mortality rate is high in cavies. The chance for losing both sow and pups is always present, even with experience. Although this is a site for experts to assist owners, there is no expert in any field who has all the answers. The wisest thing a good expert can know is their limitations. Not having an answer does not diminish one's ability or knowledge. It simply shows that we recognize our limitations and operate within them.


Raised and shown cavies for many years, having aquired my first cavies in the early 1970's as pets. My caviary currently handles 65 + animals in two different breeds and several varieties. Having been in the health care industry as a licensed nurse for 35 years I have hands on experience with care and needs in both humans and cavies. Member of American Rabbit Breeders Association and American Cavy Breeders Association.

Awarded Lifetime Membership in of one of the oldest cavy clubs in the United States, on whose Board I served as Sec/Treas for six years and currently serving as President. Also editor/publisher of the club's quarterly newsletter. We are strong supporters of our youth exhibitors, most of whom are 4H members who are working on cavy projects. Through these projects they become good responsible citizens. We deal with all aspects of showing, breeding, caring for and sharing experiences in the fancy. The cavy fancy is not a new one but in some areas is still relatively unknown. Our goal is to inspire interest in high quality, responsible breeding to improve the species, not just the reproduction of guinea pigs. Our job is to educate owners to help them make the right decisions and choices in the care of their cavies.

Graduate in nursing. Certified in emergency medicine.

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