Perhaps they just need a change of pace.
That's why I suggest this Nature's Miracle Hooded Multi-Cat Self Cleaning Litter Box available at Petco.
What's great about it is that it is automatic. It is for more than one cat. It also has an indicator that lets you know when it is time to change the litter.
Now, now more accidents and happier cats. A win-win for everyone.
For more information regarding Petco coupons or Petco products, please visithttp://www.scottsigler.com/petco-coupons and also www.petco-coupon.livejournal.com.