I would suggest calling a vet. Dawn dishwashing soap is a old method for killing fleas and protecting mom and kittens until the kittens are old enough for treatment as well as needing to wait to treat inside and outside the house for flea infestation.
Call a vet. There are products you can use. Ryder at EOAH. Will know.
Oh I don't think so but you can call and ask the vet clinic
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