4M Building Solutions, a cleaning, janitorial, housekeeping and disinfection services company headquartered in St. Louis, Mo., and a portfolio company of O2 Investment Partners, has made an investment in and partnered with Capital Services, based in Columbus, Ohio.

Capital Services is a provider of cleaning services for healthcare, municipal and other corporate and industrial facilities, along with niche construction cleanup. Through the investment, O2 looks to grow its janitorial and cleaning services business in the central Ohio region.

“4M’s investment allows us to partner with a like-minded organization and provide additional support and growth opportunities to our valued employees, customers, and partners,” states Christine Mitchell, former co-owner at Capital Services.