Which Termite Treatment is best/effective?

House in Bay Area has Drywood termites. Seeing activity only in one localized are of the house.

Unable to decide which treatment is better?

- Fumigation
- Heat treatment
- Orange Oil.

Should we be doing full-house treatment or just localized?

View this post on my blog: http://madeinhome.info/which-termite-treatment-is-besteffective