The items remain in the Recycle Bin until you empty it or when the items cross the expiry date of the storage. To recover permanently deleted files and folders, you would need a dedicated Windows data recovery software. However, the items stored in this folder get permanently deleted after 30 days from the date they are sent to it. Instead, they are sent to the Recycle Bin.
When you delete the files using only the ‘Del’ key, they are not permanently deleted. Recycle Bin is a folder or directory in Windows systems, which acts as a ‘holding bay’ where deleted files and folders are temporarily stored.