Can I deflea 5 day old kittens , they are infested with them and extremely noticeable so them must be in agony If I can't deflea them then is their anything I can do to help them ?? Also what flea stuff ?
Your vet is going to be your friend here, crazy, and they absolutely have to be tackled. They're pretty dangerous to kittens.
Speak to the vet first thing. Most chemical flea treatments can't be used on very young kittens so you're likely going to have to use mainly some manual methods with a flea comb. You'll also have to treat Mom and the environment and the vet will advise on what is safe for a lactating female. (And supply treatments for the house.)