16 oz., 4G Surface Guard: Walls 5 Gallon Pail - HZ Any resultant run-off is a

Any resultant run-off is a readily biodegradable gray water soap that can be left to biodegrade

Window cleaners love them too

or potential damage from harsh cleaning methods

and sun-baked spray cans from masonry

16 oz., 4G Surface Guard: Walls 5 Gallon Pail - HZ Any resultant run-off is a4G Surface Guard Walls is a permanent water based impregnation system for horizontal and vertical mineral and porous architectural surfaces. The treatmenttransforms natively absorbent surfaces into high water and oil repellent surfaces (hydrophobic & oleophobic). As an impregnation, it penetrates mineral substrates through their natural absorbency and by gravity. 4G SURFACE GUARD is not a film forming sealant. It leaves the substrate fully vapor