[smartpuppiepets]

You can cause a lot of harm to your yorkie if you use it. First off, as it had been mentioned, you should not be using a cat product on a dog or vice versa, they are made this way with a reason. Second, a flea collar belongs inside the vaccum cleaner bag ! That is the only safe place to use it!
You are better off with the regular reccomended frontline or revolution.
best wishes.
XOXO