Best way to get the zombies in a building to come to me?

Sometimes I’m in the mood to just murder everything real fast and get out of the building. I’ve tried throwing pipe bombs around but nothing comes chasing after me. I figured that would get the zombies in a building charging at me.

Are there any other solutions or do some of the zombies only respond until I trigger them in specific ways?

submitted by /u/WalkingCasino
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