XT-2000 Orange Oil Plus for drywood termites, a naturally occurring essential oil containing the active ingredient d-limonene (a derivative of the citrus rind), is now being carried by Univar. When injected directly into wood, XT-2000 kills termites and their eggs on contact, the company said. XT-2000 added the product is effective and profitable, saying homeowners appreciate that they don’t have to move out or worry about pets or plants. Additionally, the firm said, in its first year of business, Xtermite in San Diego had $1 million in sales using only this product; by its fifth year, the firm had more than $2 million in sales.