So we have found that collecting our dogs feces & urine & pouring them down the holes is helpful. Also found when the canister in my vacuum is full, I will dump that down groundhog holes & dump the dog feces on top of it, it seems to help. They have destroyed the foundation around the barns at this abandoned farm we recently moved to.They also have burrowed near the foundation of the house. I ran an old hose down the hole near the house, buried the hose, covered the hole & poured the dogs urine down using a funnel. I had to do twice & now they do not try to burrow near the house. I use the feces & vacuum contents near the barns. They are still definitely around, but they are not digging the foundations up anymore & mostly stay close to the fields & the creek. So we are partially winning this!
So we have found that collecting our dogs feces & urine & pouring them down the holes is helpful. Also found when the canister in my vacuum is full, I will dump that down groundhog holes & dump the dog feces on top of it, it seems to help. They have destroyed the foundation around the barns at this abandoned farm we recently moved to.They also have burrowed near the foundation of the house. I ran an old hose down the hole near the house, buried the hose, covered the hole & poured the dogs urine down using a funnel. I had to do twice & now they do not try to burrow near the house. I use the feces & vacuum contents near the barns. They are still definitely around, but they are not digging the foundations up anymore & mostly stay close to the fields & the creek. So we are partially winning this!