I have a small lesson program, board a couple of horses, and lease a couple of more to customers. Total of ten horses currently.
Personally I am not a fan of treats for horses as it can encourage them being mouthy but people will buy them. I do ask that they put them in a sealed container, I even have one available for their use.
Last month one of the ladies that leases a horse left a bag in the small tack room that services that barn. I rarely go in there as it is just her tack, along with another boarder, and some random extra things I have. Even with diligent rodent control mice found the bag of treats and brought friends to the party. I threw away what was left of the bag as it was contaminated and retreated that barn.
Earlier this week I checked another container a boarder had in the main barn. It was closed but when I opened it “moths” flew out. Again, disposed to the treats.
I hate to say never, ever, ever, bring a treat. They are useful when catching a horse in the field at an odd time. We are concerned about bugs and rodents.
What has been your experience at facilities that were not totally private?