I have two chi's and two cats (indoors). Recently we switched from a all natural cat litter to fresh step litter. We have always had problems keeping the chi's out of the cat box and eating the poo. Since we have switched from the all natural bark litter when I can't prevent my youngest chi from getting into the box he has been puking. I am sure it is because the new litter is not good for him. Unfortunatly this cat litter is awesome and keeps the smell completly out or I would just switch back. Do you have any advice about keeping the doggies out of the cat box so I don't have to switch back? Thanks!