From: "Kohler, Chris E" <[log in to unmask]> Date: November 21, 2008 8:13:26 AM EST (CA) Subject: RE: cleaning fume hoods Thanks everyone. Looks like we are all faced with the same problem. "On occasion" I have cleaned the fume hood myself after a lab has been vacated. Only then did I give written clearance to the custodians to clean the remaining interiors. I guess that is what I will continue to do but put the primary responsibility on the lab occupants. Thanks again, Chris