How do I block an application on Facebook?

[Arran :)]

Someone keeps sending me Farmville 2 requests and it's really p***ing me off! How do I block the App?

[Ronnie]

Go to privacy settings >> click manage blocking next to " block apps and people" >> bottom of the page you would see a field to enter the app you want to block, enter the name and click block.

or

Go to Privacy Settings > Block Lists > Block app invites. Type the names of friends you want to block from sending you app invites and press enter