Standard Mortar Tray Moisture Lock Cover

This cover is made of Military Spec Cordura Fabric 1000d.  It is waterproof but also breathable.  It is the perfect solution for covering your Mortar Tray and keeping your worm bins moist. The cover is 19″x 26″ when flat and will fit any standard sized mortar tray.   The Cordura Material is fairly heavy so it fits down very tight on the surface of the bin and wraps up the sides of the mortar tray to provide extra protection.  Bubble wrap is waterproof…but it is not breathable and it only lasts for so long and the worms will sometime climb into the bubble wrap and get stuck. This is a permanent solution and it will last basically forever.  The cut corners allow the cover to fit tightly even on the corners and will adjust to different widths and lengths.  For best results it is best to place a peice of wetted cardboard or newspaper under the cover, as this is the worms favorite place to hang out.