Some are micro caches and you can sit at a picnic table and not be aware your 2 inches from a cache. Plain fun and ingenious methods to hide them make for a fun outing, planned or spur of the moment. And yes I bag trash and haul it out.
I’ve never even seen a Geocache on private property; there are enough parks around so they’re not needed, and in northern NJ there are large state parks that are used to hide them.
Because I appeal to the children’s greed about what they might find, they don’t like micros.
Beware of muggles!