I use those square containers, I buy little rolls of adhesive squares (they have 2 sizes). I use the small ones for that container. They are nice and sticky and adhere to top edge of the container.If the corner gets lifted for a sniff, they stick right back. They are clear, you can hole punch the top before you put them on, that works too. Oh, I get them from TC's $1.92 for 24. Kyme