I've got two customers with large oak trees that dropped allot of acorns last fall. These babies are now growing and are really upsetting the customers. Both yards are polluted with tiny oak seedlings. Does anybody have any ideas on getting rid of them without killing the grass. I've told the clients that they will eventually die off--but they want instant results. Thanks---Mike BTW--in NE ohio, we are getting allot of brown-out on the grass, no rain last 3 weeks and 90 temps are taking there toll.