Does anyone know of a way to neutralize the oder of dog urine on sand

baking soda

Water it down as soon as possible with the hose. I would also try white vinegar, mix up 50 / 50 with water, and rake it in the area.

Hello. To get the smell out of concrete or asphalt, it is a process. Most everyone knows that asphalt and concrete are very porous and absorb liquids and odors as well. Click on the link below to read about the process for eliminating the urine smell from concrete.

https://homerepairgeek.com/home-flooring/remove-pet-urine-off-concrete.html

As far as eliminating the odor from sand, sprinkle baking soda or lime over the entire area. Spray with water so that it soaks into the sand. Allow to dry overnight. Good luck!

You can use a pet enzyme cleaner, you could add it to a hose attachment bottle (like an old windex hose attachment bottle) and spray it down. I use Jackson Galaxy tablets that you mix with warm water, making it fresh makes it much more active than the stuff you buy in the store which is mostly water.... https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=Jackson+Gallaxy+pet+and+stain+remover

But if its that foul, I would suggest you take the dog to the vet, its not normal.

I would also train the dog to use one area to relieve him/herself, doggy potty, keep a lined bucket and pooper scooper to clean up. Walk dog on leash there to relieve themselves until trained. You can keep an extra bucket of sand to refresh the area.

This is a product I've been hearing about: https://www.amazon.com/NaturVet-Eliminator-Concentrate-Spray-Ounce/dp/B000EHZFK4/ref=as_li_ss_tl?&linkCode=ll1&tag=odor07-20&linkId=bd4acf859ec6a7e799ac39d5377ec040

Baking soda absorbs odors very well.

Use a commercial enzyme remover. I use Nature's Miracle. You may have to remove the sand if the urine has sunk in there. Then I'd get a commercial spray to spray on the ramp and surrounding areas to keep the dogs away.