Back to this one tomorrow arvo,have armed myself with some ammonia,some and hydrogen peroxide ,couldn't get any sod met,flipping local home brew shop has closed down.
Am I right in thinking I mix the ammonia with some hot water ? Then mist in on with a spray bottle,wait for desired reaction the rinse out,I do have some oxibright from Prochem,but it's 7 years old,and in one big lump,so I fear it has past it's best.
This is basically a kill or cure attempt,he is well aware that he may be calling his insurance company,I did go into detail about him not getting me in until he has cleared it with them,but he was adamant that I go and attempt it