For drywood termites in general and in furniture, our suggestion would be to treat all new wood and untreated wood with Boracare. Boracare will absorb into the wood and kill any infestation already there plus protect your new wood. However, it can only be used on untreated and raw wood.
For any wood that is treated or can not be removed, we would suggest drilling little holes and injecting a product into the galleries such as Alpine Ant and Termite Foam which will foam through. It has a transfer effect so the termites will transfer it to other termites in inaccessible areas.
Dry wood termites in Furniture