My candle refills are designed specifically for my pots, they should not be burnt as a stand alone candle or in any other containers as this my pose a fire risk.
Please use them as intended, they have not been tested in any other vessels and so can not guarantee that they will burn safely. Please only use CefnforCandle products.
When your candle is almost at the bottom (quarter inch), very carefully add some hot water in a bowl and stand your pot in water. Leave for a minute or two, allowing the wax to melt. You should then be able to slide the disc out easily.
Thoroughly wash out your pot with hot soapy water and dry, dry, dry! Wax and water are mortal enemies! So before you pop in your next refill, make sure its absolutely dry.