Hayley just came home with a 10″ Boots & Barkley SISAL Cone Post Cat Scratcher [from Target] for the cats.
I noticed the round bottom looked to be about the same size as the Bergan Turbo Scratcher cardboard center.
Turns out, it is a perfect fit with slight modification to the Turbo Scratcher. I used a razor knife to remove the detent tabs that hold the cardboard in the Turbo Scratcher and could then push the Cone into the opening. From the bottom side of the Turbo Scratcher, I fastened two screws to secure the cone in place.
The cats LOVE it!! They can now play hide-and-seek with the ball as it goes around the cone.
Just thought I’d share.