Haven't used the Reptfogger per se, but I do use larger ultrasonic room humidifiers all the time. Most models can be modified to fog several cages in a row if needed. Same basic technology, but they are a bit sturdier and easy to keep clean. As said before, keep the unit clear of hard water scale with vinegar, and clear of bacteria with bleach solution on a regular basis. RO water is the best thing since sliced bread!