OMG fleas are so horrible this year! Frontline quit working on both of my girls and they aren't on any meds. I hope you can figure out something that works for your baby!
Treating the yard would be a good idea
I've had to do it THREE times this spring before I finally (please God!!!) killed them all. Had to spray the house and wash everything too, it's a major pain in the butt but anything for my kiddos. They are both allergic to the flea saliva, so just one will set off itching marathons
Good luck!!!!