The Columbus Dispatch reports on Tuesday, May 20, 2008 that there is an insecticide called Tree-age which kills the Emerald Ash Borer beetle when its larvae eat tree tissue treated with the chemical. It costs about $200 to treat a 16-inch diameter tree. Makers of the insecticide say it needs to be applied every year. Dan Herms, an Ohio State entomologist, said “more research needs to be completed on Tree-age before it’s known how much of a weapon it will be. Other insecticides have been effective.”

Neighbor Andy Steinman treated a couple historic ash trees on his Adena Brook property and writes: 

Susan: some folks might want to know that one can treat for the ash borer with a 90% success rate.  However, this is a long-term commitment.  We have several very mature ash trees on our property and in our general vicinity of the ravine… I have chosen two very important ash trees to save.  The others I will have removed carefully so that we do not destroy any other trees.  I highly recommend Dave Alhum of Alhum & Arbor Tree Preservation [876-5622].  I am sure there are others who can treat for the borer but folks should ensure that they are using a qualified company.  Elayna Grody gave Dave a great endorsement when I told her whom I was using.