 "Lasius neglectus" does not build elaborate nests, instead, the species usually nests under flat stones, in the topsoil under leaf litter and even in trash piles.In human habitats, "L. neglectus" tends to nest inside electrical devices.Like other invasive ant species, "L. neglectus" relies on honeydew for its main food source and, but for a single instance in a grassland without trees in Tbilisi, known food sources come exclusively from insect prey and honeydew-producing insects on trees.