Delete all tweets that have a specific keyword in them

Hi!

Does anyone know of any decent software/programs that can scan a Twitter accounts tweets, and delete any that feature a specific keyword?

I've heard of the software: tweeteraser - But not sure if it's legit or not.

I have more than 70k tweets, and most probably about 3-4k of them have this keyword I need deleting.

Any suggestions would be great, thanks!

You can create a custom Software to do so.. I do not think there is an existing one which do this.