See the board at the back of the right compost bin? I was using that to keep compost in (where the front mesh screen is). It didn’t work out, because animals kept knocking it over. I had a roll of chicken wire, so I stretched it across the front of both bins. Using a staple gun, I stapled the wire to the board in the center front. When I need access to the bins, I just unroll it from either side. While I was working with the bins, I went ahead and turned the soil. It was pretty packed on the left and hard to separate the soil, so I’m glad I turned everything.
If you plan to make a compost bin, make sure you use chicken wire with small holes so that dirt doesn’t fall through. My wire at the back of the bins has wide spaces, so I have to put boards up against it to keep everything from falling through the holes in the wire.