DRYLOK 01908 Masonry Etch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Use to patch interior or exterior mortar joints， cracks and holes in masonry walls above or below grade， sealing leaks around concrete and masonry</li><li>Safer to use than muriatic acid</li><li>Odorless concentrated powder formula</li><li>Low Volatile Organic Compounds</li><li>Applies easily with a stiff brush</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51N4kB4S6iL.jpg" noproxy>