When we got our log burner in we used paving stones for a hearth it's starting to look grubby now didn't help spilling candle wax on it what can I use to clean it
Could you use a sanding machine? or can you take them outside and clean them up with a pressure cleaner? (not sure if you cemented them together or just layed them loose...)
Well you could try and use a hard brush and bleach solution or as I said at first a sanding machine. My sander attaches to the hoover so very little dust.