Just finished off a large tin of timber rot treatment which I
probably bought ~20 years ago, which seems to work very well.
It's for treatment of timber which in a modern house would have
been pressure treated, but in an old property, wasn't treated.
Claims to protect against and kill wet rot, dry rot, insects.
It's a Wickes Professional product (oh the irony that range
no longer exists;-)

Are such products still available anywhere, or have they all
been banned now?

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]