Butler County-based Kaivac has found a way for janitors and other personnel to not just clean but sanitize the most grungy items without directly touching them -- all with use of "green" chemicals. The key is a high-pressure fan spray, then vacuum extraction and a recovery tank. An independent U.S. Environmental Protection Agency-certified lab recently confirmed two Kaivac products are effective sanitizing devices that, when used as directed, reduce E. coli, C. difficile, MRSA, pseudomonas, and salmonella bacteria by 99.9 percent. The company reports sales of about 30,000 units on every inhabitable continent, primarily to schools and building service contractors. Last year, the 40-employee company purchased a larger facility and moved its manufacturing and R&D functions there; the rest of the Kaivac will follow in the next year or two.