Answer: It's difficult to find pesticides formulated for use indoors on houseplants and not all pesticides will control all kinds of pests so your best approach would be to identify both the plant and the pest and try to find a product registered for use on both. Most houseplant pest problems can be taken care of by simply setting the plant in the shower and washing the insect pests down the drain. An exception might be fungus gnats. Because they fly away when disturbed its sometimes better to control them by placing a barrier between them and the houseplant soil. The potting soil is where they feed and breed. By excluding them you'll kill off the next generation and the current ones will starve or dehydrate. Best wishes with your houseplants.
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