1. Go get a hammer: claw hammer, ball peen, doesn't matter. 2. No, wait--first, go to the beach and bring back some sand; take a pail with you. 3. Find where the rats have gnawed through one of your walls. 4. Take out the wall for access into the rathole. 5. Go buy a shovel and dig, so the hole's going down instead of straight back toward the wiring. 6. Pour the sand down the hole that you've dug…