Orange oil helps orchids against lice and other stubborn pests. Orange oil can be found in many household cleaning products, but is also available as a pure essential oil, which is used to flavor dishes or as a fragrance oil.
The oil attacks the natural wax layer of the lice, causing them to dry out. Mealybugs and scale insects are among the most common orchid pests, followed by thrips and spider mites. Plant doctor René Wadas recommends on Focus.de to use orange oil in this case.