28 
WHITE ANTS 
— —— 
White Ants will not touch timber soaked in Cooper's 
Powder Sheep Dip, and this can be proved by the official 
records of the Transvaal Agricultural Department. In 
March, 1906, some hundreds of pieces of wood, mostly 
deal, or equally susceptible to the ravages of these insects, 
were treated by the Entomologist of the above Depart- 
ment with 126 different mixtures and buried in ground 
infested with whiteants. They have been examined yearly 
and, on being dug up again after nearly three years and 
three months had elapsed only SIX forms of treatment 
were found to have been effective, of which one was the 
use of COOPER'S POWDER DIP. All these were 
arsenical preparations. It is well known that Cooper's 
Dip possesses the following advantages over even other 
arsenical compounds, viz.—It is cheap, obtainable every- 
* where and absolutely uniform in strength. 
When using Cooper's Powder Dip for preserving timber 
from white ants, mix at a strength of т pint of dip to 9 
gallons of water, and soak the timber in it for 24 hours. 
The Manager of Warralong Station, Port Headland, 
W.A., writing in July, 1917, says :— 
*Re using Cooper's Powder Dip and oil as a protection 
against white ants, we find that timber so treated is proof 
against the ravages of these pests. The method we use 
in mixing is to use boiled oil (raw would do) and to make 
the mixture into a paste first and then thin it down into 
the consistency of thick paint, and then paint all joints, 
Most of the houses up here are built on blocks, and we 
- find that if the bottom plates are well painted, it will 
prevent ants getting into the building.’ 
AL. _ E Rc ls 
