[Plugin: Defensio Anti-Spam] Is it possible to delete all spam sitewide after X days?

I have a large site and I’m getting a lot of spam just sat in the data base. I know I can set blogs at an individual level to remove spam after X days but I want to do it sidewide..

Is this possible?

Thanks

https://www.ads-software.com/extend/plugins/defensio-anti-spam/