This ingenious device takes the guesswork out of measuring the chips and the mess out of soaking them.Fill the perforated stainless steel chip trays with wood and place in the plastic soaker box. Fill with water to cover.When you need chips, raise and rotate 90 degrees and allow the excess water to drain off for a few minutes... voila!Stainless steel trays may me used directly in your barbecue or smoker.