I'm new here but I feel sufficiently experienced on this matter to comment,
Bitcoin mixers can often hurt you more than they help you. Of course, it depends on your exact use case.
Once running bitcoin through a mixer it can often be refused by many of the top bitcoin exchanges. And, if push comes to shove, they can find you through a mixer. At this point you're guilty until proven innocent.
If you need privacy, bitcoin isn't really the answer. It's the right framework for it but the wrong implementation.
Use Zcash or Monero for that. Some use Monero/Zcash as the mixer themselves. This can also work, but again, it puts you in an awkward position (still less awkward than a bitcoin mixer). The best option if your business allows it is to just operate on a privacy coin.