Some pay for a dumpster.
Some have a manure pile and have it hauled away a couple times per year.
I’m not offended, I’m simply pointing out that it’s just not a simple decision or idea like you think it is. And the BO not maintaining their round pen how you think they should doesn’t mean they don’t care about anything else on their farm. What a silly statement. :sigh:
Natural ground and grass are perfectly acceptable footing for any round pen. This OP just seems to have an issue with keeping their horse’s attention, which is a training issue, not a BO maintenance issue.