Odd that this topic should pop up again, after a year, or perhaps we have an interest in the product cited?

The stubbs of cheap candles, split to remove the wick, and a fine cheese grater, does it for me.

Parquet flooring needs a good subfloor to stop individual blocks moving under pressure (particularly from ladies heels), and would not, therefore, be an obvious choice for a sprung floor in a domestic setting.