Yes, orange oil is an effective treatment for termites. Orange oil contains d-limonene, a natural termiticide that can be used to kill adult and larval forms of termites. It works by disrupting the pests’ cell membranes and also has some repellent properties which help reduce infestations. When applying orange oil, it’s important to wear protective gear, avoid contact with skin or eyes and consult with a pest management professional for best results.