The microfilters are located in the upper engine bay at each corner. Big black box. Before using Lysol, make sure your drainage hole is clear. These fill up with leaves and stuff. Dealer usually will not clean it out. Once that is clear, remove the filters, turn ac on and spray Lysol into hole that leads to the duct. The purpose of this is to kill moldew, not make the car smell like Lysol. So do not overdue it. I hope this helps you out. I beleive the Lysol trick is discussed in detail in the archives. try a search to see how it works. Good luck.