Solve tough odor problems with either the Might-Mini or Slim Line De-Odor Rod. Each requires no power source, is non-toxic, emis no masking scent and only uses natural mineral crystals. Both can be used everywhere, especially kitchens, refrigerators, bathrooms and pet areas. Also use in your vehicle and your workplace. Slim Line De-Odor Rod is recommended for litter boxes and animal cages. Will last up to one year.