Resolva Path & Patio weedkiller is ideal for: Quickly eliminating a range of annual and deep-rooted perennial garden weeds, including grasses, docks, nettles, dandelion, bindweed and many more. When to use Resolva Path & Patio weedkiller: It’s best to apply Path & Patio weedkiller on a calm day when weeds are actively growing and have a large leaf area to absorb the weedkiller spray. If it rains within 6 hours of applying the weedkiller then this could reduce its effectiveness and you may need to treat the weeds again. Resolva Path & Patio weedkiller contains diquat and glyphosate. Use plant protection products safely. Always read the label and product information before use.