Boxie Cat Pro vs Sustainably Yours

I just got my LR4 a few weeks ago and switched from World’s Best to Boxie Cat Pro. I have a 3 year old female ragdoll, and I’ve always been nervous about clay litter and being harmful for cats. I’m not really sure where I remembered this from.

Is Boxie Cat clay litter really going to harm her long term? She doesn’t cover her business so I like the absorbing time and clumping efficiency of Boxie Cat. I have two bags of it at the moment, but changing litter has never been an issue for her.

Thoughts?