First up, If you don’t own the place, termites are a landlord’s responsibility. If it is yours, you need to find out which  type of termite they are (dampwood, drywood, subterranean etc) as what to about them varies hugely between the different types.

Termites found on clothes in the wardrobe are usually subterraneans.   Unfortunately, termites are almost never a do-it-yourself problem. First up is to get a professional to take a look at the whole house and give you a written report.  You pay for this inspection service.  Sometimes you can get a free quote but be wary as these will always be ‘free’ based on the company’s expectation of adding the cost of the free inspections to the cost of the control job. Every company has to earn enough money to cover the cost of the work they do.

Don’t go spraying anything or disturbing the termites before the inspection as this  only makes things worse (= more expensive to control).

If you are lucky, the problem may be solved cheaply (for now) with a few well-placed puffs of a toxic dust. It may mean a termite baiting program or perhaps termticide placed into the soil but in any case, the aim is likely to be to kill off the attacking colony.