Is there a radon detector?
https://docs.google.com/document/d/1DlI4RJR-g0aPcWarmeF_iy3RDYShA6_UAyXjS5P28Vw/preview
Ann Arbor/Washtenaw County Department of Environmental Health has home radon testing kits available for half price: $5.00 for another week (till the month ends). You can learn how to get your package by clicking