Hello, recently my guinea pigs have been scratching very constantly and keep turning their heads to try to bite their backs, so I’m pretty sure they have mites. I checked their fur and don’t see any lice, and they both have no scabs or wounds. However, I still want to treat for mites as they scratch a lot and seem unhappy and uncomfortable. I live in Canada and have spent hours looking for ivermectin in Canada and I can only find the paste ones meant for horses. I don’t want to dilute this, because I don’t know how. Are there any Canadians here who know where I can buy pour on ivermectin. Thank you so much!