The cat slippers don't repel creepers from Creeper Overhaul.

The forge version already has this, but it seems like the latest Fabric version is still running behind on this. This issue tracker is only for general suggestions or issues with the Forge version, so let's move this to the issue tracker for the fabric version instead.

What version of the mod are you on, this was implemented a while ago.

artifacts-7.1.1+fabric.jar
creeperoverhaul-2.0.8-fabric.jar