Ants can spread virus, milk aphis and with their dirty little feet, track nasty bacteria and molds onto the flowers and the plant. NO, NO, NO to ANTS!
If ants have set up housekeeping in a pot, I spread out a sheet of newspaper and sprinkle ant powder on it. Then set the contaminated plant on it and sprinkle more powder on the top of the mix. Gently bounce the plant on the newspaper, walk away and leave it for 10 minutes. Repeat this several times as well as tapping the sides of the pot. Leave on paper overnight. The following day, bounce and tap the the plant one more time. If no ants show up, take the plant back to its home, carefully wrap up newspaper with the remaining powder and dispose of it. The powder should wash through the mix on your next waterings. Works for me every time.
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Cym Ladye