The Litter kwitter is made from the same material as a Firefighter's Hard Hat - it's about as hard and stiff as plastic can get. It wont bend, flex, crack, split or move no matter how large your cat is. Litter Kwitter trains your cat to go into the bathroom whenever they need to 'go,' and to hop up onto the toilet to do it. The special white seat starts on the floor next to the toilet with the red training disc full of litter just like their regular litter tray. Later, the whole thing is placed on the toilet rim so your cat learns to hop up to go. This take around 8 weeks on average. Litter Kwitter comes with a universal base plate (a special kind of toilet seat that fits all standard toilets), the three training disks (red, amber and green), a comprehensive instruction booklet plus a 30-minute DVD with step-by-step training directions you can see.