This picture is of the doorway between the kitchen and the dining room. The kitchen flooring installer was still working on the job as this picture was taken.
This is an area that should have been treated before the new
floor covering was installed. The stains could have been water from the kitchen
but sniffing the stain revealed that they were not!
Small areas of untreated urine contamination like
this will eventually provide the new owner with those little wisps of odor on humid days or after cooking a big meal or when a
small amount of mop water enters the area. If they have a pet, it
will find this area in a heart beat and re-mark it with its own scent.
Later, the owner removed a 3 x 2 section of the new floor covering and the adhesive, then treating the
urine stain. The floor covering was replaced with new.
It almost matched.
Removing the adhesive is very important and difficult. The residue of the adhesive probably prevented some of the urine residue from being neutralized completely.