SOAP SOLUTION 77 



desired to use it in larger quantities, a convenient method is to steep 

 1 pound in 1 gallon of alcohol, then dilute with 40 gallons of water. 

 This material is not poisonous to man or the higher animals. 



Soap Solution 



Hard soap 1 pound 



Water 5 gallons 



A simple solution of soap and water is effective against plant hce 

 and similar sucking insects, and is especially useful for treating insects 

 infesting house plants, where it is not desirable to use other and less 

 pleasant materials. 



Ordinary laundry soap may be used. Dissolve 1 pound of soap 

 in 5 gallons of water. This solution will not injure plants in leaf. 



Whale-oil soap may be used instead of laundry soap. The potash 

 soap is best. It should contain not over 30 per cent water. One 

 pound in 4 or 5 gallons of water is the proper strength for plants 

 in leaf. 



A solution of whale-oil soap and water is sometimes used for San 

 Jose scale, applying it to trees in winter, while they are dormant. 

 For such use, take 2 pounds of the soap to 1 gallon of hot water. 

 This material is not as effective against scale as lime-sulphur solution, 

 and the cost is greater. 



This is one of the remedies occasionally recommended for killing 

 root maggots. , These maggots are not properly sucking insects, but 

 because of the conditions under which they are found, the use of a 

 contact insecticide is sometimes recommended. 



