The cats did not go to the litter for one day. Ziggy scratched the rugs and meowed. Mimi jumped on the bed when I woke up and did the burying faeces movement on me. Finally Ziggy, after much complain, went to the flushable litter.
In the afternoon I decided to experiment and put the bowl in the toilet with the usual litter, the bentonite clumping one. Mimi went immediately! Later that evening Ziggy followed.
