How is the "fair market value" of carpet calculated?

1st break loose & remove as much as you can by hand(if any). Then see if you can vacuum up remaining loose small pieces that will flake loose with a stiff/hard brush. Then place a highly absorbent material like paper towel or cloth towel over the the wax, then put newspaper or brown paper bag over that and run a hot clothes iron over the material to melt the wax and draw it up. Check the material frequently and replace it with fresh paper towel or whatever you're using. You may want to use several layers at once. There is also a candle wax remover available at some drug stores and grocery stores and perhaps places like Home Depot or Lowes. Wait to use the wax remover until you've gotten out all you can with the 1st 3 methods.