If you are having a problem with ground squirels, you may want to contact your county agriculture department. We have gotten a number of products through them to control the ground squirrel population at our ranch. We have successfully used both traps & a bait poisoned with something that sounds a lot like diphacinone. Sorry, I don't remember for sure & the poison is at the ranch, which is some distance from my home. It does work very effectively.<br><br>John