I recently sparyed Pramitol 25E for a customer and have had plants grow back. Why would this happen? It has happened in places that I even sprayed twice! What could I have done wrong? My customer wants this place dead. The place is on a slight hill, some is rocky, some is not. It is a fenced in area. What grows back is not looking healthy but it does in fact grow. For the record: I always sprayed late in the evening so it would say on the ground as long as it could. In some places it has in fact worked and there is no regrowth. In some places.....I just can't explain it......What is going on? We have had good rainfall which is what Pramitol needs to work. Any suggestions? Thanks, Morgana.