weed and grass killer

Re-entry and replanting guidance varies by product. Many sprays say people and pets can return once the spray has dried. Replanting intervals differ: some products allow planting new flowers, trees, or shrubs after about 1 day, one product specifies 5 days, and a residual preventer notes ornamental plants, trees, shrubs, sod and seed can be planted about 4 months after application.

Organic or plant-based formulations use non-synthetic actives such as an ammoniated soap (listed at about 3.68% ammoniated soap of fatty acids) and blends that rely on water, essential oils and a surfactant instead of conventional synthetic herbicides.

A 64 oz refill is described as capable of treating up to about 400 individual weeds when used with the compatible snap-in or power sprayer.

These products target a mix of broadleaf and grassy weeds and other growths. Examples include dandelions, clover (white clover), chickweed, knotweed, plantain, mallow, purslane, crabgrass (large crabgrass), morning glory and dollarweed. Some formulations also address moss, algae and lichens in specific use areas.

Initial wilting or visible effects can appear quickly—often in about 20 minutes to a few hours depending on the product. Complete plant death or full control may take longer, typically from about one day up to one or two weeks for some products.

Residual or prevention lengths vary by product. Some preventer formulations advertise multi-month control (one product notes about 4 months), while others list shorter durations such as around 12 weeks or about 1 month. Several products simply state they help prevent regrowth without specifying an exact timeframe.