Keep checking the plant for a recurring infestation during the next couple of weeks. It's also important to gently dig around the roots and look for pests in the soil, such as sow bugs, millipedes and slugs. You can remove most of these by hand, or you may want to rinse the soil off with a garden hose and repot the plant in new soil. Serious, persistent infestations can be treated with an insecticidal soap spray or a multipurpose insecticide containing a miticide. Both are available from gardening centers.
Excess spray can be toxic to the plant.
Fall also is the time to repot plants that have been outdoors all summer. Turn the plant upside down and tap the bottom of the pot while supporting the plant. The roots and soil probably will come out in one piece. If the roots are crowded into the shape of the pot, it's time to remove the old soil and move the plant to a pot one size larger. If the plant has grown excessively, you may want to trim it to an appropriate indoor size.