Splogs… Splogs… Splogs… Any suggestions?

I’ve got catcha on my register page and splogs are still getting through – you know, the same old culprits – firstnamelastname19XX !

Any suggestions on how others have coped with this?

Does anyone know if this https://premium.wpmudev.org/blog/get-rid-of-splogs-once-and-for-all/ works????