Yes I've dealt with it but I'm not a con artist. It it can only survive within a very narrow temperature and humidity band. The spores are in every house in the UK, but because the conditions are hostile to it, ity doesn't grow. It's probably the most difficult organism on the planet to grow - so it's ridiculously easy to get rid of. I bet you are in the damp proof industry. The industry where all cowboys end up.
Obviously if the damage has been done then the timber needs replacing but it's a very fragile organism. No need to send it to a fookin lab. Ventilate and replace the rot, job done. It's a mould - not a triffid.
It's not hard to defeat. It's all lies from a crooked industry that peddles absolute bullsh*t.
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