Mitral cells carrying pheromonal inputs project to the amygdala and hypothalamus to drive instinctive behaviors. Nutritional stress is apparently linked to the female endocrine system and ovulatory pheromonal cycle. They are likely to have pheromonal functions like those found for the brood recognition pheromone. Most termites are blind, so communication primarily occurs through chemical, mechanical and pheromonal cues. The scent is nocturnal with a pheromonal tendency. Mothers lay their eggs in locations with strong pheromonal traces from these organisms. This could suggest that pheromonal/chemosensory factors could also contribute to induced ovulation in some species. It also has strong antimicrobial qualities, and pheromonal effects in acari and insects. A good example of this case is given by pheromonal long range molecular communications. Garter snakes have complex systems of pheromonal communication.