So with ZO you give a primal Dutch and sustainable gift. You mix the cleaners yourself into sprayers that last a lifetime. From ZO you will be happy. Because it works and because it looks nice. With ZO, cleaning is even more hygienic. Just check, if you rinse a cloth in soapy water, the water becomes dirtier. The soap is losing strength. And with your rinsed cloth, you actually transfer dirt to a different surface. That can be more hygienic. The simplest solution is to put a sprayer from ZO in every room. With the <strong>ZO 4-in-1 gift set</strong>, you have just the right sprayer everywhere in your home. There is already 50 ml of cleanser in the sprayers. You fill them with water yourself. This saves unnecessary transport of water. Happy with SO? Then order the handy refill bags. They just fit through the mailbox and with a bag you can do about a year.