Many posts here mention the physical difficulties of the floor cleaning business, presumably from moving heavy equipment, etc. One person mentioned carpal tunne

Many posts here mention the physical difficulties of the floor cleaning business, presumably from moving heavy equipment, etc. One person mentioned carpal tunnel syndrome from repeatedly working a valve on a spray wand. So there might be even more money here for someone who can figure out how to solve these problems: lighter tools, ergonomically designed handles and triggers, etc.