Because the dog has urinated on the couch. Either the dog is untrained or nobody has taken it outside and the couch was the first place the dog had to relieve itself.
Put dog outside where they belong and buy a new couch, because urine has ammonia in it and the smell will never go away only fade. Well actually....you can use 1 part vinegar to 2 parts water. Vinegar will remove the enzymes that make the urine smell, oh that would be the ammonia, and the smell will go. You will need to keep the dog away from the couch until it is clean and dry though, and then make sure it does not happen again.
With more urine
To remove the smell of dog urine from your microfiber couch, mix equal parts water and white vinegar in a spray bottle. Lightly mist the affected areas and blot with a clean cloth. You can also sprinkle baking soda over the area, let it sit for a few hours, then vacuum it up to help absorb any lingering odors.
No.
If your dog is still peeing on the couch, then you have not trained him/her well enough yet.
Spray with vinegar and ventilate the area.
its not trained
I Was also frustrated with this so i decided to remove the cushions from the couch and after awhile my dog stopped going on the couch
The dog is being dominate and possessive. The dog needs to be on the floor level and fartaher away from the couch, as height and closeness to either a person or object which the dog feels possessive of, results in more of this behavior. The dog is claiming ownership of the couch or the person sitting on it. The owner needs to let the dog know it does not own the couch, and that it is not allowed to be near the couch unless the owner invites the dog to do so.
You can remove urine by using a product called D-molish Now.
To clean a urine-soaked couch, start by blotting up as much of the urine as possible with paper towels. Then, mix a solution of equal parts water and white vinegar, and spray it on the affected area. Let it sit for a few minutes before blotting it up with a clean cloth. Repeat if necessary and allow the couch to air dry completely.
The answer to that is simple that means ur dog is hungry trust my dog does it a million times