By installing this system under a raised deck, what are the cleaning recommendations for debris that falls through decking gaps and doesn't wash away?

Hi Chris, thank you for your interest in Tuftex DeckDrain panels! When cleaning needs to be done, you can use a solution of 1 parts bleach to 4 parts water through the cracks of the deck. Be sure to spray with a garden hose or low pressure washer to rinse the bleach away. For project specific information or more details please contact our customer service department at 1-540-898-7000 opt.2 M-F 8a-5pm EST.