First, you need to remove the ones currently active. This can be done with any of our ground squirrel live traps. Based on how many you say you have, I'd go with the LT5518RD. If you thing this trap isn't quite big enough, get the LT7824 seen on our ground squirrel traps page. Once you've successfully removed all the active squirrels, go ahead and set up some ground squirrel repellent to keep any new ones from starting a new nest. This will be important since the odors and scents from the ground squirrels active right now will linger if you don't set up the repellents.