so I just tested the puff-shrooms against the gatling pea bloons and they got hit by them, what's weird is that the peashooter bloon can't hit puff-shroom but gatling pea can, I'll definitely fix that in the next update. Also I don't recommend using mushrooms in bloonbotany 2 since puff-shroom and sun shroom are useless there and fume shroom is hard to use