I just had to look this up on line. There is no concrete evidence that this works. Supposedly it has been tried on moles, gophers and woodchucks.
Two theories prevail:
You need to place it in the entrance of their burrows and leave the foil on.
Woodchucks eat it with the tinfoil and gum wrecking havoc on their digestive tracts. But it remains an unproven remedy.
Moles are suppose to love juicy fruit. Now this is a bunch of horse hockey pucks because moles are meat eaters. And yet some fruity piece of gum is enticing to them?? Don't think so.
And gophers, they are suppose to eat it and have their insides messed up. How, nobody knows! What exactly makes people think that a gopher will just walk over and eat gum.
Then these silly believers start to suggest smushing earthworms into the gum in order to get a mole to injest it. If the gum is so darn effective, why do you have to mix in earthworms??
As an aside, I have a woodchuck and he/she has eaten nothing but weeds and plants. It doesn't bother anything else. I know where it's burrow is but I can't kill an animal who is just doing what comes natural to them.
It just seems to me that if humans are as smart as they think they are, we can come up with something better then Juicyfruit gum!!!
How about chewing tobacco??
We will hide their spittoons!!!