flea collars aren't actually good for them, and if they get them off they can poison themselves

I would try pills. I'm not too sure, as my dogds have never had fleas, but my cat had fleas once, and it drove me bonkers!!! I gave her like five baths and the fleas then went to me ( iread they aren't supposed to do that??? ) So I had fleas for a really long time, it was discusting!

One tip - fleas will not die if you hit them. You actually have to grind them between your fingertips. I know it's gross, but grind the suckers!