I log visits on most caches for the travel bugs I'm carrying I currently have three when I get to another good cache I'll drop one. I don't drop more than one in a cache and my daughter and son do the same so it takes a month or two to find a good cache. We alternate who gets to drop one. Many caches are micros and nanos im also going to stop droping in small they seem to disappear. I've been following the tracakables I drop till I see they are on there way. I also don't drop In a cache that gets pilfered often.