Weed And Grass Killer Ready-To-Use is effective in cool and cloudy conditions as well as warm and sunny. Replant one day after application. Use in and around vegetable gardens, flower beds, tree rings and mulched beds, as well as hard surfaces. Foaming technology lets you see where you spray. Rain proof in ten minutes. Visible results in six hours. Active ingredients: 2% Glyphosate; 2% Pelargonic acid and related fatty acids.