For the most part, electric blankets are a very safe and cost-effective way of providing warmth and comfort in winter. This is particularly true if the blankets have an automatic shut-off feature or run on low voltage like the models offered at CozyWinters.
But just as with any other electric appliance that plugs into a wall outlet, electric blankets must be used with care in order to avoid potential short-circuiting, overheating, burning, and similar problems.