Well the fact that the horse likes to eat from the trees while we are walking and such, I didn't want to bring him in there if it isn't safe yet. I didn't think we would drop dead from just walking around. But if the trees and area is all covered in whatever it is they sprayed I wouldn't want to go in there.
With animals a lot of us are paranoid pet parents I think she's perfectly justified in being afraid of her horse eating something covered in bad chemicals. I know when we have weed killer in the back yard I make sure my dog doesn't go near it for at least a week.
You're more safe now, with a lower chance of a disease-carrying insect bites. But just so you know, I'm the type of guy who lets my cat lick the side of duct tape rolls. He just LOVES the taste of the glue!
Man, y'all have weird cats. My dogs just like licking each other's crotches, which is, in the world of dogs, pretty much normal behavior.
I would question how long it lingers on the plants and if its safe for a horse to ingest. As you know, they can be quite sensitive to toxins and cannot throw up, and they can be devious in grabbing bites where you don't want them to. I'd wait to ride through there until after the next rainfall. --Moony
I'm sure your best bet would just be to contact the Rangers at the park by phone or e-mail and ask if it is permitted.