House & Garden Drip Clean 1 Liter by House & Garden. $48.00. Removes dirt particles and residues. Used to clean drip hydroponic systems. House & Garden Drip Clean acts like a magnet, removing dirt particles at every nutrient feeding so that piping and medium remain clean. This gives your nutrient program a clean slate to work on. Furthermore, Drip Clean gives plants a boost, improving their greenness and vitality.