oops, sorry...I went away and just got back here to see the replies.
LOL - yeah, maybe it is a southern "thang"...I've always called them drops. Sorry about the confusion.
Hmmm, that brings to mind what I call the things at the store that you push around and put stuff in. What do you call them where you live? My friend from Mass makes fun of me because down here - we call them Buggies.
Back to the OP - the flea drops/topical that have always worked for me is Advantix (sp?) (I believe many have success with Frontline, but I've never tried it).