No secret!!! It is the New Improved Heavy Duty Tile & Grout Cleaner PSRP Xtreme we have improved the strength so it dilutes more and taken the caustic out of it. It is only available to Trade in this dilution
Kev can you provide us with a link for the New and improved Heavy Duty Tile & Grout Cleaner PSRP xtreme. I've been looking on your website and can't find it. Also what's the algo stuff rob is asking about?