LOL, the Home Depot flatbed I rented a week ago (the $19 deal although I went a little long and ended up paying $32 total) had just hauled a load of dirt or mulch. No one read me anything saying I couldn't use it for purposes other than carrying a Home Depot purchased item (although that's what I was doing). The HD page for the F250 flatbed does say they only supply a hitch if you are renting something towable from them but says nothing about using it for other purposes (like hauling dirt).

The fine print is on the cantract and not elsewhere.