There are multiple telepaths here capable of disguising people who will stand out. It isn't the best solution, but avoiding conflict with the natives by having them not notice us seems a smarter play than hoping they'll behave.
It's easy enough to make people forget what they see and to make anyone who'd be stupid enough to come exploring suddenly have the inexplicable urge to go straight home and take a nap. I'd suggest groups just take a telepath with them if they need to go into town. For those who don't know, that's Betsy, Jean, Charles, and myself.