Strong pet Odor please help

[Howard Swede]

We are flipping a hoarder house that had several dogs that never went outside to go to bathroom. We ripped out all the carpet and wood floors, remove some sub floor, treated all areas with oil based Kilz. Utilized an ozone machine and the home still has a pet odor after installing new carpet, new LVP, fresh Paint, and updates. Any suggestions would be greatly appreciated.