A little skinny tick laden kitten showed up at our place early this spring. Dude begged to adopt him and so now we have a minky brown mostly grown spoiled rotten cat. Problem is, he has fleas. And last month's Advantage treatment didn't touch the varmits. Going on Amazon, all the side effects of all flea meds are scary as all get out. I'm asking for advice. If anything happens to this little hoodlum, the Dude would be crushed!!!