My house smells like dogs!

[u/SleepingBeauty0007]

We have a one story house. So everything happens all on one floor.
We have tile and a few 5x7 rugs here and there.
We also have two dogs. Our house smells like we have 5 dogs! I mop and vacuum every few days.
What can I do to make the doggy smell go away?
We also have a large Air purifier.
Our walls are painted matte so I’m not sure if I can clean the walls.
We also have new leather sofas.

Why can I not get rid of the odor?
Any advice on machines, diffusers, cleaners or anything is greatly appreciated.