Surge protectors are great for a limited time. They can only protect against "X" number of surges. They wear out, but do not tell us. Your electrical products still work because they are plugged into what is now only an extension cord. And there could have been surges way down the line, that can affect your appliances, even when there is no storm where you are. TVs, computers, sewing machines, etc. All draw power even when turned off so your power and your money are being wasted. Why not unplug, save money and protect your expensive investments?