Path & Gravel Control (Concentrate Tubes) | 4106331 6 Pack No glyphosate Outdoor use Coverage: up to 10 m²/tube Weedol Path & Gravel Control Concentrated Weed Killer 6 Tubes | 4106331 Weedol® Path & Gravel Weed Control Concentrate Tubes are a pre-mixed concentrate weedkiller that is ideal for use on gravel paths, permeable patios and driveways. Once sprayed, the active ingredient pelargonic acid starts working immediatley giving you results in 3 hours and breaks down in soil naturally - leaving the area ready for replanting in just 3 days. The easy dose concentrated formula makes it convenient for treating large areas and saves plastic. Just snap the tube, add water, mix and spray.