Just turned up at a job and been approached by big wig. There on site maintenance guy has put some kind of biodegradable weed killer down. It seems that he has just poured it on neat in some parts and the block paving has turned white in parts and has basically made a pigs ear of it. Am prob not the person to ask but I always try to help out.
I have just asked the guy himself but he's an old guy set in his ways and keeps saying it will come up with water. The customer has tried having the cleaners deck scrub it an nothing has improved.
Thanks for any help and/ or if I should post this in the general cleaning section let me know.
Thanks
Matt