Real-time monitoring of insects is an important objective across many life-science disciplines. Here we demonstrate the first of its kind disposable wireless detector, capable of monitoring insect activity. Our solution is based on an  indirect indicator, based on sugar consumption by insects. We develop a caramel-based antenna device, linked with an RFID chip. Apart from its nutrition value, caramel is a dielectric material, affecting electromagnetic interactions between waves and matter. Being consumed by insects, changes the electromagnetic properties of the antenna, deactivating the tag. The failure in the readout suggests an active presence of insects in the surrounding. Adding control bits, weather sustainability, and other functions, required for a reliable outdoor operation, will be reported in the future.