I many years ago bought some clogs from Clarks they were very comfy, so I bought a second pair. When I came to use them was very disappointed they were uncomfortable.
I said to me other half yesterday, if the foil worked , then you would think the manufacturer's would have added something into the design of radiators after all the years the idea has been around.
In the last few months we received letters in my close to say they were going to fit water meters, but when the water company around and inspected , they put cards through the doors our infrastructure is not suitable.