A few week ago I picked this pressured container of grout sealer to do the annual re-sealing of the tiles in the guest bathroom. It looked like a convenient format, allowing to do the work precisely and quickly. But it turned out to be very tricky to use, as too much sealer goes out too quickly. The excess sealer drips, the container is empty quickly, and you end up having a lot of clean-up to do from the excess. Better buy the regular liquid sealer and apply it with a small brush.