Personally I have been management in 3 stores and not once have I ever come across anyone "borrowing" large products like your claim for personal use. Service for example have been known to "store use" products like oil, wipers, cleaning supplies, washer fluid, and fans, electrical cords, light bulbs, tapes, staples, staplers, etc for the store. Never have I seen anyone "borrowing" lawn mowers, pressure washers...
I would sure like to work in these stores to see this for myself.