Flood types. A flood is a hazard that can occur in many countries in Europe and in the rest of the world. You have probably seen many floods on the news happening somewhere in the world and maybe close to where you live. Floods bring misery to those that live in the area.
With ToyotaCare, you'll receive 2 years or 25,000 miles (whichever comes first) of no cost scheduled maintenance, plus 24-hour roadside assistance on your new Toyota. Any maintenance your vehicle needs, you'll have Toyota trained technicians to help you every step of the way.
As Scott mentioned, they can last longer than 9 months but if not, you have the other retainers. In short, you have retention for a minimum of 3 years (if you don't lose them). $575 for 3 years is a very good deal for Vivera retainers. Lab fees for those are very high.