Carpet beetles, as their name implies, sometimes infest carpets. Similar to clothes moths, the pests also feed on an array of clothing, which can certainly cause an issue within a household, or some businesses.
In springtime, they often appear on windowsills, suggesting an infestation may be present inside the home. Female beetles lay about 50-100 eggs on or near vulnerable materials.
They are incredibly small, which makes it hard to ensure that you have caught them all, if you take a DIY approach to getting rid of them. The best option, if you are unsure about a pest, is always to get professional advice.