Moth Balls

Allison went into a hardware store and bought a box of mothballs. The next day she returned again and purchased a second box.

When she came back a third time, the sales-person's curiosity got the best of him and he says, "You sure must have a lot of moths in your house, lady! That's the 3rd large box you're buying."

"Oh, I do," says Allison. "And I can't take it anymore. I've been throwing these little balls at them for two days and I haven't hit a single one yet!"

NOTE: Yeah, it is a really bad joke! 8-(