Yes, I did say Mason bee's..
For the last 2 years I have had my cheaper boxes outside for the Spring/Summer/fall times on my back deck. I have placed painters (blue tape) over every screw hole that was in the back-side. But they just eat they're way through, and had lay eggs for over-wintering. The boxes go in my office for the Winter mind-you to be stored. Just a week ago my room-mate stepped on one of these Mason bee's in the office area! Ouch! AN early hatch (too warm) so I had to put the box, a (Realistic model) back outside to calm these bee's from hatching out early! NOT good for these speakers. What to do? NO tunes outside, bring it in every night? Not conventient!
Just Watch OUT for this in the back of your tune-box!!!