The pheromone is an attractant to male Indian-meal moths. Pollinators find flowers through bright colorations, including ultraviolet, and attractant pheromones. In addition, this species uses pheromones both as a sexual attractant and an alarm signal. The scent of plants such as yarrow acts as an olfactory attractant to females. Citronellol is used in perfumes and insect repellents, and as a mite attractant. It can act as either an attractant or a repellent for various insects. It is an attractant for boll weevils. The same guidance cue can act as an attractant or a repellent, depending on context. Valerian root is a cat attractant in a way similar to catnip. Odorous socks are a strong attractant for some animals, including dogs and mosquitos. Diatomaceous earth is sometimes mixed with an attractant or other additives to increase its effectiveness. It is also grown for its attractant qualities to house cats and butterflies. Once mature, they produce a volatile chemical attractant. Pear-derived kairomone has been found to be a species-specific attractant as well. Wetlands are another major attractant of wildlife in the airport environment.