From what I've learned at a few seminars lately, the dangers from Imprellis to evergreens may linger for awile. If a customer wants a dead evergreen replaced, be sure to find out what killed the tree. If it died from Imprellis, there are procedures Dupont have recommended for replacement. Just a couple. Do not grind stump, dig it out. Remove soil from area and replace with new. Add activated charcol to new soil. Burn removed tree. Grass clippings may still be a problem also. Do not use those clippings anywhere for mulch. I guess the point I'm trying to make is read up on the continuing dangers from Imprellis.