I have worked with Patrick Crotty closely since 2017 here at the University of Chicago OI museum. Whenever the OI receives a pest complaint, Mr. Crotty is on site the following day to address the complaint with a quick treatment and the complaints subside. During our most troubling time with field mice, Mr. Crotty prepared a treatment package with multiple snap trap boxes and out door bait boxes, and deployed them within the building and its perimeter thus eliminating the mice sightings. Mr. Crotty is an exceptional employee and an incredible asset to the OIM.