Method of killing rodents

A process for exterminating rodents comprising placing in locations frequented by rodents a rodenticide composition comprised of a substantially dry homogeneous mixture of a first ingredient comprising a carbohydrate, protein, or fat, said first ingredient being a water insoluble comestible solid of natural origin and in the form of a powder capable of passing through a 100 mesh sieve, and a second ingredient comprising a water-insoluble inorganic cementitious powder selected from the group consisting of Portland cement, plaster of paris and calcium oxide, said second ingredient being capable of passing through a 200 mesh screen and capable of reacting with water to undergo hydration with attendant formation of a coherent aggregate structure, said first and second ingredients comprising between about 20% and 60% by volume of said composition.