Most of our mental images of rusty bikes are of the Huffy 10-speed we trash-picked from the neighbor's house, with the chain all seized up. However, even high-end carbon-fiber bikes that are stored in basements and bedrooms can be destroyed by rust.With minimal maintenance, you can avoid the scourge of rust. That's important because, while steel wool can remove surface rust, once the oxidizing process starts, rust is likely to spread even if you remove what you can see.
Store your bike somewhere kind. You are a triathlete. You can't just lean your bike against the shed like you did when you were a kid. Hooks that screw into your garage rafters are a cheap purchase, and will keep your bike clean and dry. Better yet, set up a bike trainer indoors and keep your mileage up when the weather is bad. Just don't forget the towel!