if you have a stone or metal base (with no wood deployables near the door) you don't even need a trap, i had a level 145 decide to chase me into my metal 2x3 only to become my new meat runner shortly after ;) as it agro's and bobs its head through the walls you can time the headshots for an easy knockout right outside your base, just make sure to jump outside for the final shots because it will run once you're close to a knockout!!