Pharaoh ants form large colonies consisting of many nests, which colony members move freely between, without any antagonism. Colonies vary greatly in size. Some colonies may have only a single queen with a few hundred workers, whereas other colonies may have hundreds of queens with several thousand workers. Queens may live for a year and lay up to 35 eggs per day.
Pharaoh ant infestations rapidly occur if the colonies are not completely eliminated. Liquid or dust formulations of repellent insecticides are not recommended indoors because they typically cause colony budding, which exacerbates the problem. Currently, the most successful control procedure to control this species is to strategically place bait stations extensively throughout structures along trails where these ants are active.