Thank you so very much for the suggestions of hydrogen peroxide and "watering from the bottom". The thought of navigating a small watering can through all of those pots was intimidating. This will make life a lot easier.
Have had mixed success in the past with plants indoors. Major exception have been my tropical hibiscus -- Antigua Wind. My plant is 3 years old now. It puts on such a beautiful display I couldn't dream of not saving it. Have had major problems with insects. Never spray outside and with the exception of a praying mantis who took up residence have never seen insects on it. Before bringing indoors, treat it with systemic and then repeat in 2 weeks taking plant out on warm day and dousing it again. And yet still get the little critters.