On 6 June, 20:32, Colin Wilson
o.uk wrote:
Prochem Urine Neutraliser
http://www.prochem.co.uk/deodorisers...s_&_sanitizers...

That sounds like the one I was thinking of - thanks :-)

Look up Janitorial Supplies in YP, most stock it. *Around £6 for a litre,
with which you could deodorise several houses.

YP ?

Yellow pages.