David, I found this on their website. Aqua Mix recommends 3 products for removal of Enrich 'N' Seal.
Sealer and Coating Remover that Dave links to above
Heavy Duty Tile & Grout Cleaner
Stone Deep Clean
All of the above are Aqua Mix products. For detailed instructions, here on their website
http://www.aquamix.com/resource%5Fce.../#problem29759.