Apply Cleaner 304 uniformly to dampened surface using a nylon brush or stiff broom. Do not allow surface to dry. Rinse repeatedly while brushing to remove the cleaner and other loose material. Neutralize with alkaline detergent, particularly indoors. Always test a small area prior to commencement to ascertain the effect of the cleaner on the surface.

Per 1 part cleaner :

Cement based pavers and grouts – 20 parts water (do not use concentrations stronger than 10 parts water)

Clay and terracotta products – 10 parts water (do not use concentrations stronger than 5 parts water)

Shelf Life – 12 months in unopened containers.
Read all warnings.