We recently found out that a mouse had been in the cupboard under our sink (cleaning cupboard but it was after birdseed that was also in there). We've cleaned and disinfected everything and cleaned under the kickboards, but there is still a bit of a pee smell, we think it has maybe soaked into the concrete floor under the cupboard
How could we get rid of this smell rather than just masking it?
Have you got rid of the mouse ? We had the same problem when we moved into our bungalow 3 years ago - the mice were coming in under the gaps in the floorboards under the sink unit. Mr. Den pulled out the units and put metal/tin plate over all the gaps and we have not had a problem since.
Put some bleach on the site where the smell is and perhaps leave open to dry out.
Try spraying the area with a solution of biological washing powder/liquid and water,the enzymes in the powder will break down the chemicals in the urine and get rid of the smell.