Published online by Cambridge University Press: 10 July 2009
1. Methods of controlling ants invading houses are discussed.
2. Various methods have been tried, particularly against Monomorium pharaonis. The more general methods in use such as syrup baiting and the use of various insecticidal powders and sprays show at best a palliative effect and do not exterminate the pest. Destruction of the nest is effective where it can be carried out.
3. The use of a thallium sulphate-syrup as a poison bait devised by Popenoe has been tried with success against M. pharaonis and A. (Donisthorpea) niger. This inexpensive method is likely to prove useful in places where it is not practicable to find and destroy the nest, which invariably involves considerable structural alterations.