Don't know what to tell you about the fleas. I think for the flea shampoo, the kitties need to be a little older (and Adam's Flea and Tick works well). Sorry! As for accidents, I've used Nature's Miracle for my kitties and puppy when they had accidents. It's a cleaning solution that breaks down the enzymes in urine so that they can't smell where they have gone before - preventing them from going there again. I hope that helps a little