— By Robert Kravitz — Exploring three cleaning technologies that have taken center stage since the pandemic began. An entire floor of a high-rise office building in Chicago is rented out to a global, “virtual” office company. Most of the tenants rent office space weekly or monthly, and according to the management company, virtually all the spaces on the floor have been rented out. However, anyone walking on that floor would hardly know that. Virtually every door is closed and locked. Walking in the hallways, it almost feels like …
