Here are some pictures of what I did. I used foam weather stripping in a line around the lid. I had to cut grooves in the ridges along the lid for the foam to have a nice flat surface to adhere to, and form a good seal. I used a hot glue gun to stick the window screen to the vents. I taped over the holes in the handles. Every so often, when I clean cages, I refresh the tape. This bin still has tape around the rim because I thought I would try using it to deter them from climbing. It does not work at all for that. Hope that helps you out.