Most of us have had the experience of a cleaner leaving, and the whole place smelling so strongly of chemicals that you have to open every window. That never felt right to us, especially in small Bay Area apartments where there's nowhere for those fumes to go.
So we built Sano to do it differently. Same thorough clean, but with eco-friendly products, a little more patience, and better habits. The kitchen still gets degreased. The shower still gets scrubbed. It just doesn't leave anything harsh behind.