My dog has had fleas for quite some time now. We've given him bath after bath after bath with high powered flea and tick shampoo, put dose after dose of Frontline on him and NOTHING seems to be working! Thank God he isn't an indoor dog otherwise we would have fleas everywhere. But poor baby, he itches like crazy and watching him drives me insane just thinking about how much he's suffering!! Like now, even as I type he's itching.. *Sigh..* Does anyone have a STRONG flea remedy that WORKS?! Thanks!