140 THE HOME POULTRY BOOK 
quent use of kerosene or one of the prepared liquid 
lice paints. He should thoroughly cover the walls, 
the perches and the nests once a month the year 
around and twice a month in Summer. A spray 
pump will help to minimize the work as well as to 
economize on material and to reach every part of 
the house. If detachable fixtures are used, they 
may be removed in order to facilitate the work as 
well as to make it more thorough. Special atten- 
tion should be given the roost and the boards or 
blocks which support it at the ends. It is best to 
apply the kerosene or other liquid in the morning 
on a bright day, so that it will dry and evaporate 
before the fowls go to roost. 
Whitewashing the interior of the house is an ex- 
cellent plan, especially if a little carbolic acid be 
added to the whitewash. 
If a poultry house is found to be badly infested, 
it is well to give it a thorough spraying with kero- 
sene or a liquid lice killer and then to dust the hens 
after they have gone to roost with Persian insect 
powder (Dalmatian powder) or with a prepared 
lice powder. If the Persian insect powder is used, 
care should be taken to have it fresh. A box with 
a few holes punched in the bottom may be used as a 
