2 years ago I fryed 4 belkins on 1 big surge. 2 of them left little circle burn marks in my hardwood floor.They smelled terrible when they blew. I can vouch that you cant use them again once this happens.I called Belkin and told them what happened because they have this $100,000 thing where they replace anything that was destroyed while useing there products.They asked if all the equipment was ok that was contected to them. I told them everything was great except I was out 130 bucks to replace the Belkins. TGhey told me they did there job and I needed to buy new ones.