Outdoor Décor by Gardener’s Supply Company. Details:Indispensable Boot Trays make it easy to leave mud and mess at the door. Made of tough recycled plastic, they’re big enough to hold boots or shoes for the whole family, and they wipe clean in a jiffy. Not just for the mudroom, they’re also terrific for seed starting, as humidity trays under houseplants, or anywhere a watertight tray would be handy.