I think the main issue is that they hear me (or more likely the dogs) when I’m walking up to the barn to feed am and pm. The old pony has trained them well, pee and poop before you come into the stall to get your food. 3 horses peeing in the 36/50’ area all at the same time provides a bit overpowering amount of urine odor. It does drain in most of the locations. I have a few spots that hold water, but the horses seem to avoid those (Thanks to the huge deluge in June that caused terrible flooding. I lost a minor amount of footing due to the tremendous down pouring rain on a just graded/footing put down, but not fully compacted dry lot.) It has been too wet to get equipment back there to add more footing and compact it down. I have a few places that will need some repair, but I’ll have to make due until late spring.