There's now an online tool with which you can automatically delete all your old tweets. It's called TweetDelete and thanks to the latter all those publications from the period of time you choose, will disappear from your timeline. Furthermore, the first time you use TweetDelete you'll be able to choose to remove all your message to the present date.
How TweetDelete works
- Login with your Twitter account.
- Authorize TweetDelete to access you account.
- Choose the antiquity of the tweets to be deleted.
- Activate the tool and let TweetDelete do all the dirty work.
Now you know, configure TweetDelete to automatically remove your tweets. But be careful! You won't be able to recover anything that you delete.