Vendor: "There's many advantages to the use of Eucalyptus oil. It helps with head aches, general muscle pain, and it works as a flea repellant."
Customer: "So, what does it do to fleas?"
Vendor: "Once you put it on your cat or dog, the flea smells it, doesn't like the smell, then dies."
Customer: "Let me go ahead and buy that 20ounce bottle"