All it takes is for one rodent to die inside a wall due to poison and that will be the last time you'll try poison. We have a lot of squirrels, grey and flying, in our neighborhood. I had a bag of pecans in the walk in pantry. Squirrels were getting to it fron the attic. Or so I thought. I had enough of Rocky so I bought a heavy duty rat trap and baited it with peanut butter. Wife was cooking pork chops with her back to the open pantry and the trap went off. Got the bastard. Except it was the size of a small cat with a hairless tail. I fought them for about a month and rid the house of them. Then they came back. Local feed and seed man said use this poison. "They will leave the house in search of water and die outside." Big myth by poison salesman. One died by poisoning in the almost century old wall in the master bedroom. Fortunately it was wintertime and we went on vacation with windows open and door sealed to keep the smell out of the rest of the house. It took two weeks to dissipate. Damn hair tailed rodents cut pinecones in the back yard on the patio deck and in the front yard, cut sweetgum balls in the spring and summer leaving a mess on cars and sidewalks. I hate them meeces to pieces along with their other cousins. I used to shoot bushy tails with a .22 single shot Remington for the pot, but not in my neighborhood.
Pretty sure you and I watched the same cartoons when we were kids.