Stained deckingpatio waterlogged and stagnant underbase of growbag sound familiar the new exclusive growbag mat could be your solution cleverly designed to lock together and form the required size for all types of growbag the mats have 4cm x 3cm honeycombs that let water through and 2cm channels in the base to let it drain away from the bag stopping stains being caused by bad smelling stagnant water trapped underneath harbouring disease and pests such as slugs in addition to this