I’ve used the same Resmed CPAP machine from 2009 until October 2019. I stopped using the humidifier early on, never cleaned anything, and never had a problem. When I got a new machine in October I started using the humidifier and bought a SoClean. For me, using or not using the humidifier doesn’t make much difference but I do like the SoClean. I just stick the mask in in the morning and take it out when I am ready for bed. It also has the advantage of keeping it away from the dog who is not above chewing up a mask.