Daughter and Son In Law have a "shoe park" in their garage outside the kitchen door. Covers 25 to 30 sq ft minimum. The two of them, 4 kids, plus in-laws and grand kids. Dress shoes, gym shoes, work boots, muck boots. At least 40-50 pairs of foot wear at any given time. Have never had a problem that I am aware. We do not have scorpions. However, we do have brown recluse.