This cleaner is absolutely essential to properly clean your floors prior to finishing them with Rubio Monocoat. It works very well, dries quickly, and leaves no residue. It is exactly as advertised. While the Rubio Monocoat itself is non-toxic and contains no VOCs, the cleaner contains Alkanes so be sure to wear a proper mask that filters organic vapors. As long as you follow the instructions, you'll be completely satisfied.
Bonus points: KJP Select Hardwoods provided excellent service, shipped quickly, and I highly recommend doing business with them. Excellent company.