Let their "Mailslot" in the front door be your friend

Simply deposit your choice of payload Here is a list.....

1 Mice or rats....easy to get, easy to deliver
2 Crickets.....easy to buy
3 Various insects.....use your imagination
4 Rattlesnake.....hard to deliver thru the slot, but a very nasty payload!
5Dog**** all over the sidewalk in front of the place, adds to the ambiance.