Rose - assuming your concern is over the Emerald Ash Borer, there is a way to treat them preventatively. Either you can choose to hire a professional, or do it yourself. Here is the most recent suggestions:
EMERALD ASH BORER TREATMENT OPTIONS (Visually, if more than 20% of the tree is affected, it is more than 50% infected. Recommend removal.)
PROFESSIONAL OPTIONS: • Trunk inject emamectin benzoate as Arborjet Tree-Age. Will protect for at least two years • Soil inject imidacloprid (Merit) at high rate within 2 feet of trunk annually • Apply dinotefuran (Safari) onto trunk annually • Trunk inject imidacloprid at high rate annually – sold as IMA-jet, Imicide, Xytect, and other trade names. Will protect for one year. • Trunk inject azadirachtin sold as Treeazin. May last longer than one year.
HOMEOWNER TREATMENT OPTIONS: • High labeled rate of imidicloprid* Remove mulch, sod, other organic matter before application Apply as a soil drench within 2 ft of the trunk Repeat annually • Dinotefuran** as a basal trunk spray
*Homeowner imidicloprid sold as: Bayer Advanced 12 Month Tree & Shrub Insect Control Bonide Annual Tree & Shrub Insect Control Bonide Borer-Miner Killer with Systemaxx Ferti-lome tree & Shrub Systemic Hi Yield Systemic Insect Granules Optrol Ortho Max Tree & Shrub Insect Control
**Dinotefuran sold as: Safari Green Light Emerald Ash Borer Killer
Call Township, Village, City Hall to see if they offer any assistance programs. Homeowners can use wood in any way they choose. It cannot be moved from a quarantined county, and firewood must be burned on site. Preferably strip bark if to be stored for any period of time.
Phil Nixon and Rachel Kirchoefer, University of Illinois Illinois First Detector Program March 2013