Instead, you could comb the fleas off the animal with a flea comb then submerge the fleas in a small container of soapy water. This would also be a good alternative for pets that love being groomed but who violently refuse baths or the application of a spray. Before using ANY product on your pet read the label instructions completely . If you do not completely understand the instructions, you should contact the manufacturer or your veterinarian for clarification. Observe the species and age requirements listed on the label.
Cats react very differently than dogs to some insecticides.
Some dog products can be deadly to cats, even in tiny amounts. When used according to the label instructions, these can be used safely in cats. These permethrin products have a good range of safety when used on dogs, but even a few drops of concentrated permethrin could be lethal to cats. The reason for this species difference is yet unknown. Always use caution when using shampoos, sprays, topical spot-ons, or mousse near your pet's eyes, ears, and genitalia.