Neogen Ramik Bars all-weather rodenticide is mold and moisture resistant and can be used in wet or dry areas. Ramik Bars are a weather-resistant bait that can be used indoors and outdoors. Made with an anticoagulant active ingredient, Diphacinone. Ramik Bars are part of Neogen's 4-step rodent control program. This product may only be used to control the following rodent pests in and around man-made structures: House mouse (Mus musculus), Norway rat (Rattus norvegicus), Roof rat (Rattus rattus), Cotton rats (Sigmodon hispidus), Eastern harvest mouse (Reithrodontomys humuli), Golden mouse (Ochrotomys nuttalli), Polynesian rat (Rattus exulans), Meadow vole (Microtus pennsylvanicus), White-throated woodrat (Neotoma albigula), Southern plains woodrat (Neotoma micropus), and Mexican woodrat (Neotoma mexicana). Not permitted for use against the following species in California: Cotton rat, Polynesian rat, White-throated woodrat, Southern plains woodrat, Mexican woodrat, Eastern harvest mouse, Golden mouse, Meadow vole. Neogen's proven line of rodenticides, bait blocks and bars, and pellets is used for effective control of rodent infestations and is often a critical component of an overall biosecurity plan.