Connie, the raccoons most likely moved the mothballs because they simply didn't want them there. I see that with voles and poison, too. I once put a disposable tray of D-CON poison pellets on a vole trail and covered it with an old board. A couple days later I saw the empty tray had been pushed out from under the board. I thought I finally found a poison they liked so I quickly put another full tray down. The next day--same thing, empty tray pushed out and not a pellet in sight. I went through 4 trays of pellets before I noticed a disturbed area in the grass about 3 feet away. Upon investigation, I found out where all the pellets were going: they had dug a shallow trench and covered the pellets with an inch or two of dirt. I've seen where chipmunks and gophers will move mothballs out of their way of their business too, so I suppose your raccoons didn't like the smell and did the same thing.. They're a fussy bunch. But, I'll bet their little paws were burning pretty good afterwards. Mothballs can cause chemical burns to skin.
