I have two cave spider spawners that are very close to each other, so I'm trying to make a trap for them.
I have all the spiders funnel into a 1x1 vertical tube, that's 3 high, with an iron bar on the bottom.
But, the spiders get into the tube, and hang at the top, with one going to the bottom.
Is there a design with the current AI, that gets the spiders to bunch up?