I live in Arizona on a 3/4 acre lot and have a type of groundhog ruining my yard! I know a pest control guy could take care of this because he did it for my neighbor and now I think some that were in his yard have joined the ones in mine! :( I can't afford to pay for this right now does anyone have some good tips?

Not sure if this will work with ground hogs but it does with ground squirrels and chipmunks. I bought a thing at Menards that looks like a 1' tall thumb tack. You drove a large dowel rod in the soil so you can insert the tack. It is solar power and gives off a tiny vibration every 30 seconds, that's every 30 seconds 24/7/365. It apparently gets to the critter and they do not like it so they leave, maybe back to your neighbors place.