There’s no hard and fast rule on how often you should clear cookies, but there are instances when you should:

1. Every time you’re done using the internet on a shared computer at home
2. Each time you’re done using a public computer, like at an internet café
3. Whenever you notice that a website has ibecome “buggy”
4. When you notice a website whose cookies you’ve accepted starts becoming slow. This is common among websites with a lot of cookies downloaded.