So one of my cats had a few flea eggs, some flea dirt and a few adult fleas about a week ago. I treated her, the other two cats and vacuumed the whole house with flea powder.

Fast forward to...5 minutes ago.

I open up Sable's tub to change his water. And there were fleas in it. I didn't see any in his aspen bedding, but I dumped it all none the less, cleaned the entire thing and gave him paper towel bedding and a new hide. I'm going to run his water dish through the dishwasher.

I didn't see any on him, or anywhere but dead in the water dish - and I am positive they aren't mites. They are most definitely fleas. Should I be worried? I asked google, but I only got stuff on mites. I'm kinda concerned, but I'm not really sure what I can do about it..