At FleaMail we know that some treatments for dogs can make your cat very, very sick. These treatments, specifically permethrins and cyphenothrins, are not stocked by FleaMail so you never have to worry. All our treatments, if given accidentally to either cats or dogs, have a very wide range of tolerance.
Some Collie breeds can also carry a gene that make it harder for them to process some treatments. Any product we use that contains any of the macrocyclic lactone family of drugs (selemectin, ivermectin, etc) has been well established and registered to be safe in Collie breeds. If you have any questions regarding this or if you know your pet is reactive to these types of drugs already, please ask your medical professional when they call for your free consultation.
We also individually name and package your pet’s treatments so even if you have a menagerie, you won’t get confused.