looks like oil stains .............. You can see the drips from sum-sort of container ?
@ some point in this field you must suggest to customer that everything you have, you have tried , and everything thing that you have is not lifting the stain. and suggest that they have it replaced and move on... Er you can keep trying to put all kinds of chems and heat on it ! Er you can put quick-crete on it add h20 and a broom and "blend" it in . ......... A quick fix to a surface cleaner nightmare !! -- Then move on to next challange !! maybe sum ACID would lift it lil heat and then sum "quick-crete " !!!!
|