Well great, now the poison is out again. I tried the bucket thing, baited it with dog food no luck
We always mix our bait w/ peanut butter (the peanut-butter makes it stick and adds smell) and have had good luck mixing apple chunks and small chunks of meat. The trick to the bucket seems to be making certain it is stable enough for them to reach the food, but spins quickly when they position themselves to eat or jump off (and that the bucket is wide enough that they cannot jump from the can to the edge with the can turning.)
For squirrels and chipmunks, I switch to a 2-litter (to make certain it spins when they move to eat) over a larger tube and have had my best luck w/ peanut shells and berries. I don't want to draw in critters not in my yard, but I get tired of picking up the body parts my dog leaves all summer long.