"Here's an economic and easy solution: - install a first bag, put a brick - or tape - to secure the bottom, and some tape around the top rim- install a second bag inside the first oneIt's this second bag which fills with trash and that workers can take out normally. The first one stays in place. If it starts getting dirty, put a new one and use it as the inner bag !"

"Even simpler: I would cut out an indentation - large enough for a foot - at the center of each piece of wood. This indentation would point to the ground when lifting the bench. You can then safely insert your foot for flipping the wheels backwards."