Drip tips I clean daily. Other than that, I have lots of tanks which are kept with flavors I vape all the time, so I don't clean them except if for some reason, I am putting a new flavor in. Usually that will be with my ProTanks, because it's easy to clean them and I rebuild, so I can just ditch the coil and wrap a new one. I also use the PT's for dark and sweet flavors for that reason. Iclear 30s's for light fruit flavors like watermelon or strawberry. I get almost a month from a coil in those.