Scotts MossEX 3300210 Moss Control, Liquid, 32 oz BottleThe fast acting, Scotts 3 in 1 MossEX Ready Spray kills moss, algae and lichens within hours. Use it on lawns, decks, patios, roofs and buildings. To apply, just attach a hose to the connected sprayer, turn on the water and spray. Won't stain concrete or other surfaces and can be used at any time during the year. Unit: QUART UPC: 032247330022 Model Number: 3300210