CATS AS MOUSERS 
House cats are sometimes effective in removing mice and may be 
stimulated to increased effort by reducing their supply of other food. 
However, good mousers may be destructive of bird life if allowed free- 
dom, and should be kept shut up during the birdneSting season. 
REPHLLING MICE 
Certain odors and substances are obnoxious to mice and are of value, 
NeKenOne nm cepelline them from sitored products. Pilake maphithalene i's 
one of the most effective of the deterrents and when scattered over and 
around bags On ‘seeds, overstutiec furniture, books, clothing, and other 
articles may protect them effectively from mouse depredations. Inasmuch 
as naphthalene becomes dissipated in the air with time, repeated applica-— 
tions are often necessary. Because of its odor it is not advisable to 
use naphthalene to repel mice from foodstuffs. “Powdered sulphur and also 
lime have been used successfully in protecting such stored grain as corn 
and sheaf oats. 
Where foodstufis are not involved and it would be suitable to use 
certain materials as sprays, there are severel compounds that may be 
suggested, such as kerosene, creosote, blackleaf 40 or nicotine sulphate, 
and also spray emulsions containing copper oleate, or copper carbonate, 
or lime-sulphur. Oils of pepvermint and of wintergreen, also tung oil, 
are repellents to mice. Insulating materials such as sawdust, ground 
paper and the like, may be protected from mice by the addition of 
ammonium sulphate. 
1269 
