Flea bites all over 2 year old?

Brianna

My son has to go to his dads every other weekend from Friday-Sunday...

They recently got a kitten along with a new home (he lives with his parents) and the past month now my son keeps coming home with flea bites ALL over him.

Arms,legs, tummy, face...you name it and they’re there...

I’ve talked to his mom about this and her solution was “oh well wash all the linen and vacuum”....

Is there anything I can do about this???