Bought a load of second-hand Lapis holds from a local wall the other day, most are in good nick but the odd one is filthy. Any tips for giving them a good clean to get some decent surface back on them?
Just leave them in for 30 seconds or so then give them a scrub and a good rinse. Dissolves all the chalk and will get most rubber off too with some scrubbing. Waaaay cheaper and quicker than benky hold wash. You'll need a good pair of chemical resistant gauntlets though, its pretty nasty stuff to get on your skin!