A combination of things seems to work best for most of us. A fogger will keep the air humidity up, but won't necessarily produce enough drip for drinking. Drippers and fountains don't raise cage air humidity much at all. Auto mister systems are great, but depending on cage size and drainage can flood you out too. So, depending on the size of your cage, whether you need to mist more than one cage at a time, how long you are gone during the day, and what options you have for getting water into the system (garden hose, direct faucet hookup, etc) a misting system can do much of what is needed. But remember you'll have to clean out the system just like anything else to avoid bacteria growth. An ultrasonic room humidifier is also a great thing and not expensive. The little terrarium foggers are not as durable over time I've found and more expensive. If you use a humidifier you will still need to hand spray at least once a day for direct drinking. I know some people make their own misting systems, but for me the mechanically inept, bought a RainMaker Jr. about 7 years ago and it is still working just fine. More and more I go back to the combination of ultrasonic humidifier and a good long hand spray for drinking. Easy to clean out, easy to assemble, and easy to alter the schedule if I need to.