Large marshmallows filled with a surprise gopher bait. It's that gopher bait that is actually milo seeds so you need to be careful when using it. Birds and mice etc...will eat it. Mostly marshmallows appeal to raccoons but can be eaten by other critters. Also...what dies can be eaten by something else..that something else can also die so caution is recommended of course. I do put them up on branches and use a catfish bait to lure the coons to them so the "bombs" are off the ground. I just made them up because of my frustration with coons setting off all my traps every night.