Drywood Termites

Hello.

We bought a old,antique free-standing cabinet about a year ago and recently noticed the pellet droppings associated with drywood termites. Moving the piece out we found a few wings scattered about but nothing alive. I know from what I've read that the termites were drywood and pretty much feasting on this cabinet but should we be concerned that they have spread to the rest of the house? We've inspected around and haven't seen any more pellet spots but we are wanting to make sure.

Thanks!