Yes, I too have used Frontline on my 1 year old Yorkie just last weekend and they were gone by the end of the next day. Maybe you did apply it wrong. Have you taken your baby to the vet? If you've done everything else, they I'd get an experts' help by taking him to see the doc; especially if he's starting to not feel well
Good luck and hope he feels better soon. Darn Bugs!!!
