If you’re referring to a claim like “THIS burns weeds in 1 day! They NEVER grow again”, it’s probably marketing language and should be viewed skeptically.
A few points:
- Many weed killers can cause visible wilting or browning within 24 hours.
- Very few products can guarantee weeds will never return. New weeds can grow from seeds in the soil, and some perennial weeds can regrow from roots or rhizomes.
- Effectiveness depends on the weed species, application method, weather, and whether the product kills the root system.
If you saw this in an ad and want to know whether the specific product works, tell me the product name (or share the ad details), and I can help evaluate the claim.
