Any grade above about 10% needs the extra traction since the friction between the wheels and rails won ... semi-automatic system that takes their trash bins to the curb for them.
Cut the plywood to fit within the cabinet cavity, and install the wheels on the underside. You can then fix the garbage bin ...
Then select a paver stone for each receptacle you own — one for the trash and one for the recycling, for example. The stones should be big enough to fully house each bin's wheels without any ...