A brilliant bio-film remover, antimicrobial agent, MMS which is sodium chlorite NaClO2 (not sodium chloridethe table salt) activated with a mild acid in this case, citric acid is a multi-tool for the battles against microorganisms.
In many cases you can use it also without the activator but the effect is slower. Test it on a bucket with Urine, and a 10 drops MMS. The smell will disappear. MMS has been used for 70 years for disinfection in hospitals and surface disinfection, because its strong effect on bacteria, viruses, fungi, parasites, worms and mildew in a gentle way and neutralizes toxins when washing surfaces with this.
A bottle of MMS and a bottle of 50% citric acid activator for 219 NOK