Fleas On Kittens 3 Weeks Old. Kittens which are three weeks old only need four feedings per day, typically given every four hours. Here is a step by step treatment method to get rid of fleas on kittens under 8 weeks:
Start with the kitten’s back and then move onto its legs, tail, belly and face. I have 11 week old kittens that just got fleas. Typically, flea products haven’t been tested on kittens younger or smaller than that, so they may contain doses that are too high for very young, tiny.
Capstar is a popular flea product that works within 6 hours to kill 90% of fleas, and it can be used on kittens as young as 4 weeks of age and older, provided the kitten weighs at least 2 pounds.
The preventive to treat kittens with fleas. Kittens are especially delicate, and some flea treatments are not safe. Start with the kitten’s back and then move onto its legs, tail, belly and face. I personally use revolution because it treats round worms, ear mites, heartworms, and fleas, but it's pretty spendy.