These donut lids are key part of our Pint-sized Insect Pot with Snap-down Clips on Lid. To assemble a pint-sized insect pot, simply snap down 3 built-in clips around the rim to secure the lid to the pot.
These donut lids may also fit onto your own cups if mouth diameters are the same. The donut lid has a matt surface for retaining penciled notes. Its 104 x 94 mesh Nylon screen, if stained, can be replaced with clean Nylon mesh circles (sold separately) or with your own screen materials. Circles of 150 x 150 mesh Nylon screen are also available (sold separately) to effectively keep aphids, thrips, and parasitic wasps from escaping the cup.