Apparatus and method for monitoring termite activity

The present invention relates to pest control, and more particularly to monitoring termite activity proximate and especially under building structures. Apparatus, for detecting the presence and eating activity of organisms such as termites that damage structures, includes a body; a wooden bait element controllably exposed to the organisms within a cavity of the body, and having an applied bait substance; a side wall of the body having a vertically spaced plurality of smoothly converging entrance passages for admitting the organisms, a consumable porous barrier covering each of the entrance passages. Spring tension is applied to an upper end of the bait element, an opposite end being anchored to the body. A flag member that is connected to the upper end of the bait element projects from the body when the bait element is weakened to the predetermined amount by the organisms.