I used K9 Advantix on my Westie for a short while. One time when I opened the sealed tube, a few drops flew up and splashed my microwave door. It TOTALLY corroded the door - almost like it melted the door where is splashed. THAT is when I stopped using ANY kind of topical flea medication on her - and have never used any kind of flea medication on Sadie. It truly scared me to death - and to think I was applying that strong of a chemical onto my dog's skin!!!!!
