Our Path and Patio Weedkiller is ready to use formulation which controls annual and perennial weeds. It's effective to use all year round and this one-litre bottle treats up to 35 square metres - with visible results in hours! Always read the label. MAPP 17771 containing 60g/I acetic acid. Directions for use: For use only as a moss and weed killer. Do not use it on lawns. To avoid risks to human health and the environment comply with instructions for use. Read the label before use. Risk to non-target insects or other arthropods. A minimum interval of seven days must be observed between applications. It is good practice to wear gloves when using this product although this is not a requirement. Do not apply where rainfall is expected within six hours of application. Protect from frost.