Termites that have fed on the slow-acting Harris Termite Powder treated wood can accumulate the active ingredient and still move among other individuals in the colony. The transfer of food from workers to nymphs, soldiers and reproductives will also transfer Harris Termite Powder. Affected individuals also exhibit behavioral changes, becoming sluggish, stop feeding and start to die. Others in the colony will avoid these individuals and areas where they have died. Treated wood is not the first choice for feeding, therefore Harris Termite Powder treated wood is not preferred by foraging termites.