Best tool for unfollowing?

Hello,

One of my biggest Twitter accounts follows too many people (300K range.) Does anyone have any recommendations for a tool I can use to clean up the account? I want to unfollow inactive users and people who don't follow back etc.

I was paying for ManageFlitter before, and it was perfect, but Twitter forced them to change their entire platform. I can still load inactive users, but I have to unfollow them manually on Twitter now, which takes forever.

Thanks.

I personally used CrowdFire before to clean these junk BOTS & inactive ones into some of my accounts.
works great, don't know if it's still great like before though

Jarvee?