Scandal, my mom's maltese, is having a reaction to Frontline. My mom tried it about 2-3 weeks ago, and Scandal's back has a rash on it. There are some red splotches and a few pimple-looking things along her spine. Needless to say, Mom's not going to use the Frontline again.

What is a good alternative to Frontline, one with different ingredients?

Maybe Advantage?