5. Greater cleanliness about markets, grocery stores, warehouses, courts, alleys, stables, and vacant lots in cities and villages, and like care on farms and suburban premises. This includes the storage of waste and garbage in tightly covered vessels and the prompt disposal of it each day. 6. Care in the construction of drains and sewers, so as not to provide entrance and retreat for rats. Old brick sewers in cities should be replaced by concrete or tile. 7. The early threshing and marketing of grains on farms, so that stacks and mows shall not furnish harborage and food for rats. 8. Removal of outlying straw stacks and piles of trash or lumber that harbor rats in fields and vacant lots. 9. The keeping of provisions, seed grain, and foodstuffs in rat-proof containers. 10. Keeping effective rat dogs, especially on farms and in city warehouses. 11. The systematic destruction of rats, whenever and wherever possible, by (_a_) trapping, (_b_) poisoning, and (_c_) organized hunts. 12. The organization of clubs and other societies for systematic warfare against rats. FOOTNOTES: [1] _Mus musculus._ [2] _Rattus norvegicus._ [3] _Rattus rattus rattus._ [4] _Rattus rattus alexandrinus._ [5] Farmers' Bulletin 461, Use of Concrete on the Farm, will prove useful to city and village dwellers as well as to the farmer. [6] _Scilla maritima._ [7] CAUTION.--Carbon disulphid is very inflammable and can be ignited by a match, lantern, cigar, or pipe. [8] Farmers' Bulletin 699. PUBLICATIONS OF THE UNITED STATES DEPARTMENT OF AGRICULTURE RELATING TO NOXIOUS MAMMALS. AVAILABLE FOR FREE DISTRIBUTION. How to Destroy Rats. (Farmers' Bulletin 369.) The Common Mole of Eastern United States. (Farmers' Bulletin 583.) Field Mice as Farm and Orchard Pests. (Farmers' Bulletin 670.) Cottontail Rabbits in Relation to Trees and Farm Crops. (Farmers' Bulletin 702.) Trapping Moles and Utilizing Their Skins. (Farmers' Bulletin 832.) Destroying Rodent Pests on the Farm. (Separate 708, Yearbook for 1916.) FOR SALE BY THE SUPERINTENDENT OF DOCUMENTS, GOVERNMENT PRINTING OFFICE, WASHINGTON, D. C. Harmful and Beneficial Mammals of the Arid Interior, with Special Reference to the Carson and Humboldt Valleys, Nevada. (Farmers' Bulletin 335.) Price 5 cents. The Nevada Mouse Plague of 1907-8. (Farmers' Bulletin 352.) Price 5 cents. Some Common Mammals of Western Montana in Relation to Agriculture and Spotted Fever. (Farmers' Bulletin 484.) Price 5 cents. Danger of Introducing Noxious Animals and Birds. (Separate 132, Yearbook 1898.) Price 5 cents. Meadow Mice in Relation to Agriculture and Horticulture. (Separate 388, Yearbook 1905.) Price 5 cents. Mouse Plagues, Their Control and Prevention. (Separate 482, Yearbook 1908.) Price--cents. Use of Poisons for Destroying Noxious Mammals. (Separate 491, Yearbook 1908.) Price 5 cents.