In my former house, I had a hot tub on the back patio and stored my chemicals in a waterproof cabinet under the roof overhang. I never tried putting my bikes near it cuz I had a huge garage but I did store my metal snow shovel next to it. Never saw a problem so that box was apparently worth it's high price for many reasons. I'll keep that in mind for the future when we finally buy a place out here in OR where we live now and put in a new hot tub again. (my old creaky joints can't wait. )