Timber infestations are often caused by the common furniture beetle inhabiting timbers, such as floorboards, joists, staircases, etc. The adult beetle first lays eggs on the surface of the wood. The hatched beetles then eat their way into the wood to mature (sometimes over years) and eat their way back out. This is a natural process, but not one you want in your property. Adc-Ltd has the best woodworm treatments available to get it under control.