Any monthly spot-on flea preventative containing permethrin works on these external parasites as well. I think advantix is permethrin based. Just don't get it near cats because it is toxic to them.

Would you know if has a strong smell? I am sensitive to lots of smells, chemicals, and things that nobody else can smell.

I wish I could say, but I am the opposite of you and can't smell very well at all. If a skunk is prowling about outdoors, everyone else can detect the odor before I can. Therefore I'm probably not the best person to answer your question. Hopefully others will be more of a help.

I wish I knew because I live in the country and we have a lot of deer flies and black flies and mosquitoes. I think deer flies are the worst.