I like my method the best.
I send over about 5 transports, and upload the traitoris filth and then expell them into space. Once the planet has only a million population left, I abandon the planet. Later, I will move a few ships in long with a transport full of my people, and re-establish the colony. The ships in orbit will reduce the chance of the colony going into riot mode, and even if they do,the fleet will eventually quell the riot and I can then build Pacification centers.
Hope this helps.
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New Age Ship Yards
"We've made too many compromises already, too many retreats! They invade our space and we fall back -- they assimilate entire worlds and we fall back! Not again! The line must be drawn here -- this far, no further! And I will make them pay for what they've done!" -- Captain Picard STNG
Borg Breen Species 8472 Cardassian Dominion STNG Ferengi Klingon Romulan
Trek Movie era TOS Illuminati Starwolf