[ Dual Sided ] The most important area of brushing your cat's teeth is the back molar area. This is where most of the plaque & tartar build up occurs. However, cat molars have deep grooves, and food often gets stuck back there. Use the pick side of the RYERCAT Toothbrush to “floss” your cat's teeth and get food out from tricky areas. No need to stop & pick up a 2nd tool with a wiggly cat.