For gutters, drains, and waste pipes in factories, vitriol salts (sulfates of copper, iron and zinc) are sometimes used. These are deodorants as well as disinfectants, and are not so objectionable to use on account of their odor.
These suggestions as to the use of chemicals, however, only apply to extreme cases and should not be brought into requisition until a thorough application of hot water, soap, a little soda, and the scrubbing brush have failed to do their work.
FOOTNOTES:
[51] Günther and Thierfelder, Arch. f. Hyg., 25:164, 1895; Leichmann, Cent. f. Bakt., 2:281, 1896; Esten, 9 Rept. Storrs Expt. Stat., p. 44, 1896; Dinwiddie, Bull. 45, Ark. Expt. Stat., May, 1897; Kozai, Zeit. f. Hyg., 38:386, 1901; Weigmann, Hyg. Milk Congress, Hamburg, 1903, p. 375.
[52] McDonnell, Inaug. Diss., Kiel. 1899, p. 39.
[53] Kayser, Cent. f. Bakt. II. Abt. 1:436.
[54] Treadwell, Science, 1894, 17:178.
[55] Conn, 5 Rept. Storrs Expt. Stat., 1892, p. 396.
[56] Fermi, Arch. f. Hyg., 1892, 14:1.
[57] Duclaux, Le Lait, p. 121.