Conditionally killing all bacteria in our homes we achieve short-term effect only. Pathogens have already learned to respond to the attacks of disinfectors and antibiotics and become immune to them rapidly. Even medical sanitization doesn’t give desired effect. As a result now humanity faces MRSA infection, which exists in almost every hospital and is not sensitive to chemical cleaning products. Luckily enough, we have a choice nowadays. Probiotic cleaning products work effectively and safely. They destroy harmful bacteria leaving good ones.