2. Then, revisit Every single flooring and canopy every flooring’s roof with trapdoors. But ensure none of the trapdoors is open. These trapdoors reduce zombies and skeletons from spawning within your Creeper farm. Creeper farm patterns have changed through the years (Image through Mojang) While making a creeper farm https://www.youtube.com/watch?v=0pBrKXKqPrs