Now drier weather is here, it is easier to look for ants nests by the thrown heaps of soil. It is a good time to try and eradicate ants nests before they get too large, as smaller amounts of dust powder need be applied.
The black ant is one that needs culling, especially near the flower/vegetable plot, as it is these types of ants that heard green-fly and black-fly, especially on fruit trees and on beans. Broad beans and runner beans can be especially affected by aphids. Black ants carry aphids from plant to plant, and it can be just a few days from having pest-free beans to having plants so seriously affected that the only course is to destroy.
Also a good time to rid the garden of woodlice. Keeping the growing area free of old rotting wood is a must. Ant powder will also keep woodlice numbers down.