I'd take 5 gallons of water and pour it down each of the holes. Then take 1 gallon of gas an pour it down onto of the water, then drop a match an get back fast. The doggies will come out fast, if not and you smell hair burning, get about a 20ft piece of barbed wire, and spin it down the hole till you feel resistance then drag up the critter......An old timer told me of that trick!