Here's my procedure for stonies:
1. 5 hr soak in interceptor
2. Then 15-20 minutes of ReVive coral cleaner
3. Then 15 minutes in a pretty strong lugols solution
In between dips, I spray with a turkey baster to see if anything flies off, (aefw etc.)
And inspect with jewelers magnifying viser.
Scrubbing off anything that looks weird or discolored with a strong bristle tooth brush or clipping off pieces with bone cutters.
After all that quarantine for a few hours to keep inspecting it. Has worked the past 6 years not getting any pests in the tank.
I do occasionally lose corals doing this, but it's not worth taking a chance.