I use a 5 gallon bucket of water mixed with 10--12 ounces of Murphy's oil soap.Turn the pot upside down and let the loose stuff fall to the ground then dip the plant down to the soil level.Don't wet the soil itself.This kills all the tiny livestock and doesn't hurt the plant.Keep a cheap kitchen sieve handy for skimming off the loose stuff you did not let fall to the ground before dipping.If there are eggs,a second dip a week later may be necessary.