RED POWDER THAT TURNS BLACK WHEN MIXED WITH WATER. REMOVES LIGHT RUST AND TURNS TRAPS A DARK COLOR. WORKS AS WELL AS BLACK DYE AND IS CONSIDERABLY CHEAPER. IN A CONTAINER LARGE ENOUGH TO COVER THE AMOUNT OF TRAPS YOU WANT TO TREAT PER TIME, ADD 1 POUND OF DYE TO EACH 5 GALLONS OF BOILING WATER AND SIMMER FOR 1 HOUR. ADD WATER AS NEEDED TO KEEP TRAPS COMPLETELY COVERED. REMOVE TRAPS, RINSE WITH WATER AND HANG TO DRY.