Hey, in both cases that I found a wet log it was because the container wasn't closed properly. I was able to clean off threads /re-roll logs to close tightly to avoid more moisture but good to know that best practice is to contact the CO for maintenance.
To satisfy your curiosity, I'm waiting for a batch of log strips and one container from the geocache online store. At 59 finds I'm starting to think about where I would plant caches. Still learning though so won't plant until sure it'll be a decent one!