Simple Solution do a version of their stain and odour remover specifically for patios and decking that works really well.

I've also found Formula H from PaH pretty good.

 

We use Jeys Fluid. Be sure to read instructions.

 

There is something called Urine Off see link for details.

http://www.urineoff.co.uk/

 

The stuff they sell at Crufts smells lovely (the big stand in hall one) can anyone remember which company it is ?

 

I use Aqueos disinfectant attached to the hose, and in the summer I use a pressure washer to give it s good scrub.

 

I've tried a few but good old Jeyes is still the best IMO

 

I use Mistral on my artificial grass, it works really well and comes in a massive choice of scents, http://mistralie.co.uk/products/odourfresh-pet-disinfectant-standard

 

I use zoflora on the gravel in our doggy loo as it has a nice strong but pleasant smell. It supposedly neutralised the urine, and it's safe for pets once dry. Haven't had any pee smells since

 

Be careful zoflora can be toxic to cats
We use it in the kennels at work n just opened a cattery and my boss told me not to use it in the cattery (I don't know til she told me)

 

Shall be watching for suggestions. My garden is all decked and concreted so the dogs wee on the concrete. I've been using biological washing powder in hot water which is ok but sometimes it still has a slight whiff, thinking I need something a bit stronger.