Show i F r Ir 1 Lice Inflict Heavy Damage on Cattle DDT Treatment Cu Guts s High Nigh Winter Losses Lice are injurious to all types of oj cattle Animals produce less meat meal and milk If lice are unchecked Young animals and poorly poorly-nour old animals suffer most from lice The winter season is the time lice are bad bod on cattle cottle The louse population population tion lion builds up then Dr Harold Gunderson extension entomologist at Iowa State college says one louse unchecked in fall means 1000 the following March For lice control on cattle DDT i is being used successfully Early in fall rall before cold weather arrives itis it itis itis is mixed with water and sprayed on the animals After cold weather comes a DDT dust is recommended Farmers are being advised to use a adust adust adust dust containing 10 per cent DDT Some of the powdered louse killers on the market contain less than 10 per cent DDT but have other effective effective ef insecticides combined with tho ho DDT The rotenone dusts recommended for cattle grub control can be used for lice control Usually they are diluted for lice to cover greater area and reduce the cost For inStance instance in in- stance tance one pound of a cattle grub dust lust containing 1 per cent rotenone rotenone rote rote- none Done can be mixed with two pounds of flour to make an effective louse killer |