http://healthypets.mercola.com/sites/healthypets/archive/2010/11/30/harmful-chemicals-in-flea-collars-and-sprays.aspx
Flea meds can cause skin irritation, there are other natural ways to control fleas. First you need to remove the cause, it may be the Advantage you are using. Mercolahealthypets.com have several education articles on the dangers of using these products on your pets.
http://search.mercola.com/search/pages/Results.aspx?k=flea&r=sitename=”AR4BaHR0cDovL2hlYWx0aHlwZXRzLm1lcmNvbGEuY29tCHNpdGVuYW1lAQEiASI=”
