CLR Oil and Grease Remover

Works like a treat – Follow the instructions, put some effort into the brushing stage, and be aware that it can take 3-5 days to complete the final process as the sun helps to fade the stain, longer if the area is never in sun. I've used on grease and old engine oil on bricks and concrete. Sometimes it can take two applications for oil stains, I leave 2 weeks in between to allow the process to continue, but has worked every time (for old oil embeded in concrete you can't expect any product to remove it 100%). Sometimes it will bleach the concrete over a few days but thats fades after a few weeks too. I've been using black CLR for about 15 yrs now.

Waste of money – One of the worst products I've ever used. Did not make any impression to the oil stains, even fresh oil. Better off buying a cheap degreaser. CLR you need to do better than this.

Absolute rubbish – Used this, on reccomendation, to get rid of some oil and fat stains on pavers around our BBQ. The original stains are gone but the CLR has left its own stain which looks much worse than the original stain. Pressure cleaning, acid washing etc doesn't assist. Going to have to replace the pavers! Nothing Everything