Zap-It RTU weed killer - 1 gallon For control of all types of broadleaf and grass weeds on walks, driveways, gardens, flowerbeds, along fences, and around trees and shrubs. This product may be used for non-selective weed control around patios, walkways, driveways, in vegetable gardens, and other landscaped areas. Apply to plant foliage until thourouly wet, is rain fast in approximately two hours and afterward will not be affected by rainfall or irrigation.