OK basically we have a conservetory , and there is a gap large enough for a cat to get between the conservatory and next doors wall, and today the house started smelling of cat urine, any ideas on how we can get rid of this smell? We were thinking of perhaps spraying bleech out there, don't know if that would work we don't have cats so have no idea on this subject thanks in advance

Bleach will react with urine to break down the urea. It will also kill bacteria that might cause more smells.

OK thanks, erm we got some jeyes fluid here to try, its like a disinfectant, do u think that will be enough or would bleach be the best idea?

I'm not sure what that is -- it'll probably work to kill the bacteria but it probably won't destroy the urea. On the other hand, urea, by itself, isn't very smelly.

Either one will probably work. Bleach won't stay around for any length of time -- it'll react pretty quickly with any organic matter in the ground so your disinfectant may last longer.