FOLLOW THE INSTRUCTIONS
I bought some flea drops for my kitty cat. The back of the box warned, "To prevent harm to you and your pet, read entire label and enclosed directions before each use. Follow all directions and precautionary statements carefully."
Following these instructions, I noted the directions on the label which read, "Squeeze applicator, applying the entire contents in a single spot to the animal's skin," and then pulled out the enclosed instructions and read, "... empty its contents onto the skin, preferably at two spots, one at the base of the skull, and a second 2-3 cms further back."
It's a good thing I read all the instructions so that I knew for sure just what to do!