CARBON QR (Strong Oven Cleaner) Pet Urine Cleaner The black spots are unsightly

The black spots are unsightly and can appear on new or old patios

I forgot to say in my review that these were not just new stains these were stains over 2 years old and it worked first time

REGULAR USE WILL ALSO REDUCE BLOCKAGES TO A MINIMUM AND MAINTAIN THE FREE FLOWING OF DRAINS FROM SINKS

Bought this to treat artificial grass

CARBON QR (Strong Oven Cleaner) Pet Urine Cleaner The black spots are unsightlyCARBON QR *High Strength Oven Cleaner & Carbon Remover* ***** A powerful formulation based on sodium hydroxide which relies on a special combination of additives to penetrate burnt on food soils, dirt and general grime. It does not contain any harmful solvents and is biodegradable. ***** This product will quickly and easily remove heavy oils, greases, fats and carbonised deposits from ovens and metal cooking surfaces. Used by professionals in