Ivermectin prevents and treats infestations with common external and internal parasites such as mites, lice and roundworms. The Xeno Range is particularly effective against parasites which commonly cause ear and skin problems and offers a treatment strategy which has tried and trusted dosing rates. Using the Xeno Range topically offers a convenient treatment strategy for use at home. When tackling any external parasite infestation it is important to treat the animal's environment as well as the animal itself so as to effectively manage all potential sources of re-infestation. For use in small rabbits, guinea pigs, ferrets, rats, hamsters, mice, gerbils, chinchillas and other small rodents up to 1250 g body weight.