What to consider when buying flea treatments for cats “First and foremost, remember that cats are not small dogs,” says Nelson. “Meaning, canine medication is not appropriate for felines.

Fleas are a common problem, but no match for products formulated to eradicate these pests. Here are some of the best flea shampoos for cats that are fast acting and safe.

Flea Life Cycle. An adult female flea can lay 20 or more eggs per day. When eggs hatch, the larvae feed on flea excrement on the cat and in the environment for several days.

Vet-recommended flea medicine formulated to kill and prevent infestations on cats weighing over 1.8 pounds. It starts working within 30 minutes and can kill nearly 100% of adult fleas within the ...

Flea shampoos kill fleas that are present on your cat, but topical and oral flea control products are much more effective. Some flea shampoos are even harmful to cats, as the often contain pyrethrins.