If you have found moths, you have an infestation. They lay eggs, you know.
Buy a roll of clear "recycling" bags and some tape, and some anti-moth stuff like I mentioned.
Put all the clean clothes through the tumble drier, the heat will kill the eggs. Put all these clothes directly into the plastic bags as soon as the come out of the drier (hangers will fit with the hook poked through) and tie or tape up the bottom of the bag to stop a moth getting in.
Empty and vacuum all your drawers and wardrobes. Wipe clean, and spray them (especially joints and corners) with an insecticide such as Ant and Crawling Insect Killer spray (which leaves a dry film on hard surfaces)
Vacuum all the carpets twice, including under all furniture and especially round the skirting
Put enough moth killer hangers or balls in your wardrobes for the space (usually one per half-cubic-meter)
For the rest of the summer, pick up and wash all your worn clothes same day, tumble them, and put them either in the wardrobes and drawers with the moth killers; or in plastic crates, with mothkiller, if they are e.g. winter woolies that you will not be using, or in the plastic bags with one mothkiller per bag. If you have a laundry hamper or similar, tape a moth killer to the lid.
Inspect and vacuum your wardrobes and drawers frequently. Pay special attention to old carpets, underfelt, clothes that you don't often wear, including anything in the loft, shed, under the stairs. I use the spray round skirting boards, as moths often hide under the edges of carpets. If you have a steam cleaner the steam will kill the eggs. Remember you might have moths in the car as well.
It will be a year before you know if you are free of them. Pay particular attention to your best suit, party dress etc which might not often get inspected