You should also be aware that clopyralid, which is an active ingredient in some domestic lawn weedkillers, can also have the same effect as aminopyralid. After treating lawns with weedkiller grass clippings should not be composted or used as a mulch. Check the instructions supplied with the product for more information. Resulting grass clippings should not be disposed of in council green waste bins. It is possible that if affected grass clippings are disposed of in green waste bins that contaminated material may find its way into the supply chain for products, such as composts, that use green waste as an ingredient.