This product after much research picked out and tried and it does what it says !!!! Of course you should read this story the instructions and also follow !! when it applies and so, of course, comply with and is awaiting the corresponding time one can see significant improvements in the sprayed areas !!! we tried it on paving stones and on wood !! both displays einne significant refresh of said material !! I would recommend this product with full score rate for value is perfect !! (However, but we also had only one against this product to compare with which we were not satisfied) perhaps one said this: Our pavers are now for eight years and now they show so slowly after spray some time ago, significant positive changes on !! the wood it went faster !! keep yourselves in any case the description or instructions for use, and you will be amazed !! So ABACUS continue so and maybe you can still improvements to accelerate the process inventing !! Prima product !!!