MICE can at times be harmful rodents, damaging and eating crops, causing structural damages and spreading diseases through their parasites and feces. In North America, breathing dust that has come in contact with mouse excrements has been linked to hantavirus, which may lead to Hantavirus Pulmonary Syndrome (HPS). Baiting procedures are commonly used as an effective rodenticide. An effective rodenticide must be tasteless and odorless in lethal concentrations, and have a delayed effect. This is because mice will often taste a small amount of the bait and then continue eating if they do not get sick.