I'm having the same problem and there shit is all over my buds as of 3 days ago. Their poop looks like very small or little pellets and/or balls. All caterpillars do is eat, eventually deteriorating all your buds.. , as often as they eat, they poop. And the whole point of a caterpillar's life is to eat and prepare for metamorphosis. So, if the only thing a caterpillar does is eat, its expected to poop a lot! And for those users saying its eggs caterpillars don't lay eggs.. here are some options that could help eliminate those little fuckers Bt, sm-90, organic caterpillars killer from home depot, tobcco mix( not cig mix) and I hear some foliar or light soap mix spray could also work