Provent-O-Mite is the only product I use and I use it every month.
Mites go through a stage called the nymph stage and at that point the nymphs are so small that they can become air born. This means that no matter how good your husbandry is unless you're treating proactively rather than reactively you will most likely have a repeat problem. You not only want to kill the mites, but you also want to kill the eggs, as far as I know Provent-O-Mite is the only product that will kill the eggs. If you use Provent-O-Mite once a month you will stop the life cycle. I have about 200 ball pythons in my collection and in the last 12 years I have found 3 mites and I'm always hunting for them.
If you're not stopping the life cycle you will most likely continue having a mite problem.
If you need more information on how I use Provent-O-Mite give me a call at 408-981-6694 and I'll help any way I can.
Brian Gundy