Renno's Natural Logwood Trap Dye is very similar to the logwood chips that were popular years ago with many old time professional fox and coyote trappers. It is derived from a certain species of plant that is native to the mountains of Pennsylvania. This dye coats traps with a finish that is nearly rust proof and odorless and has the ability to weather several weeks of trapping.This dye is a finely ground powder that comes in a heat sealed plastic bag containing approximately 20 oz. 1 bag will treat approximately 25 to 30 #3 sized traps or 40 to 50 #1 3/4 sized traps.