I have 4 of those foggers (I have a fantastic contact for them). I use them with tarantulas and my water monitor and they work great.
I understand what Bill and Tosha (sorry if thats wrong) are saying, but if you have it on a timer set for 3 times per day, then IMHO you are doing nothing wrong.
If you think a ball python knocks things over, try a 4' water monitor! I have a pond in his enclosure and the foggers (2 for him) are sitting in salsa bottles siliconed to the corners of his pond. The top of the bottles are about 2 inches below the water line. This keeps him away from the foggers though he loves to climb all over the jars and everything else.
I just wouldn't leave it on 24 hrs per day, that would definitely be way to much for a ball. I am going to experiment with a display enclosure for one of my balls. I'll start off setting the fogger to activate several times per day, but for short periods of time. Another thing I might try is to connect it to a humistat with high/low setting so it turns on/off automatically.
I'll keep records and post later on.