Small Refill Pack treats up to 20,000 sq ft | 1 capful per 2,000 sq ftORLarge Refill Pack treats up to 40,000 sq ft | 1 capful per 2,000 sq ft Use Bactifeed on your Lawn & Garden. Brew - Mix 1 capful per 2,000 sq ft into the Brew Bottle or a minimum of 16oz of water and let brew for 8+ hoursSpray - Apply brewed product* to desired area.Grow - Water lawn for a few minutes to drive the bacteria deeper into the soil.Apply 2nd and 3rd treatments two weeks apart.4th+ treatments once a month.*If using a hose end sprayer, remove filter and set to largest droplets to reduce risk of clogging.