Swarms can infest areas up to , although typical infestations are less than . Aphids are also common pests, but they tend to infest the stems of flowers. Some species invade deep connective tissues; some infest subcutaneous connective tissue, causing unbearable itching. Wound myiasis occurs when fly larvae infest open wounds. Maggots also occasionally infest the vulvar area, causing the condition called vulvar myiasis. The pests can infest and consume more than 95% of an oak's acorns. The worms infest the house, and also attack other places in town. Cypermethrin is used in agriculture to control ectoparasites which infest cattle, sheep, and poultry. Ticks commonly infest the ears, neck and groin regions of lions. Around them, birds infest the water while winged fish crawl on land. This moth, prevalent in Cyprus, will often infest the country's carob stores. It can infest slow-moving bodies of water and is difficult to eradicate. Louse species known to infest stoats include "Mysidea picae" and "Polyplax spinulosa". Large populations can infest a house without any bites reported. "Cadra calidella" attack carob crops before harvest and infest products in stores.