you can't get Trigene anymore Alfie, it is simply re-named.. same product.. Apple scented, also comes in Lavender and another scent I can't remember.. I get mine from vets, it's what they use.
I think Anigene and Anistel are pretty much the same, just manufactured by different company...
Virkon is also good, but much more expensive
for washing outside, paving, walls, gravel, even grass I bought Sagewash sanitizer.. my new plaything :) Disperses detergent/bleach/chlorine/etc in accurate doses, just attach to normal hose and have fun spraying everything :) I love it!
Can you tell I am a clean freak lol..
http://www.mecserflex.co.uk/shop/pc/Sagewash-Sanitizer-Hydro-Ventri-Systems-c1305.htm