Baits thus prepared will keep indefinitely in a dry place. They 
may be left in little open boxes, or stations, in out-of-the-way places, 
where they will provide a permanent poison supply available to tne mice 
at all times. The containers should be plainly marked "POISON" and put 
out of reach of children, irresponsible persons, and domestic animals. 
The utensils used in mixing the bait should-be thoroughly washed or 
destroyed. 
Cats as mousers.-~House cats are sometimes effective in removin 
mice and may be stimulated to increased effort by reducing their supply 
of other food. Good mousers, however, are certain also to be destruc-— 
tive of bird life if allowed freedom, and should be kept shut un during 
the bird-nesting season. 
Repelling mice.--Certain odors are obnoxious to mice and are there- 
fore of great value in repelling them from stored products. Flake napitha=- 
lene is one of the most effective of the deterrents and when scattered over 
and around bags of seeds, overstuffed furniture, books, clothing, and other 
articles will effectively protect them from mouse depredations. Because of 
its odor, however, 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. Other repellent 
compounds are kerosene, creosote, and other coaktar derivatives, and oils of 
peppermint and wintergreen. 
av) 
