How to Prepare and Use “ Scalecide ” 
First shake your barrel or can well. This is not always necessary, but it should never 
^neglected. Fill your spray tank nearly full of plain water. Add six or seven gallons of 
SCALECIDE” to every 100 gallons that your tank will hold. Stir thoroughly and fill up 
with water. It is not necessary to agitate “SCALECIDE” after it is once mixed, but it will 
do no harm except where a gas sprayer is used. Don’t agitate after the gas is turned on. 
SCALECIDE’ will mix perfectly with almost any water, but rain or surface water is 
best, not colder than 40° Fahrenheit or warmer than 100° Fahrenheit. Seventy degrees is 
best. 
Don’t add anything to “SCALECIDE” but plain water, and always pour “SCALECIDE” 
into the water rather than the water into “SCALECIDE.” 
Every original package of “SCALECIDE” is guaranteed to make a perfect emulsion in 
water, without any free oil showing on top, when first opened and for a year afterwards, 
provided it is kept closed and in a cool place free from extremes of heat and cold. 
Should “SCALECIDE” fail to mix properly, DON’T USE IT, but notify B. G. Pratt Co., 
50 Church Street, New York, and they will replace it promptly without expense to you. 
I hey will give new SCALECIDE for old, no matter how long you have kept it on 
hand or what has happened to it, provided you pay the transportation charges. But no 
matter how old it is, if it makes a perfect emulsion when mixed with water, and looks like 
milk, it is just as good as new. 
If only a little oil floats on top after standing, this can be skimmed off and the rest can 
be used with perfect safety and is cheaper than paying for the exchange for new goods. 
Old "SCALECIDE” that has become cloudy and will not mix may be made good by 
adding a small quantity of strongest Carbolic Acid cither crude or refined. One ounce to 
four or five gallons is often too much. Use only enough to get a good emulsion, testing 
often in a glass of water Too much is as bad as too little. Carbolic Acid crystals should 
be warmed until liquid, then added to a small quantity of “SCALECIDE” to keep it so before 
using Always handle Carbolic Acid carefully as it is a poison and will burn the skin—but 
if used promptly, Alcohol will wash it off before any damage is done. 
“SCALECIDE” is the most perfect and uniform soluble or miscible oil that has been 
produced, but if for tiny reason it should not be perfect, don’t use it 
p r°f John B. Smith in the 1906 New Jersey report of the Entomological Department 
on page 591, says: After going through the (“SCALECIDE”) factory and watching the 
process of making up a car load and examining the methods of checking, filling and shipnimr 
it seems almost impossible that there should be any material difference in the produc sent 
out or m the percentage of actual petroleum oil in the different lots. Differences in result 
must be due to factors outside of the composition of the materi?! itself.” 
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