All Out Ultra Refill is a powerful and effective mosquito repellent solution that provides long-lasting protection against mosquitoes. The refill is easy to replace and provides up to 45 nights of protection. It is designed to be used with the All Out Ultra Machine, ensuring your home remains mosquito-free. All Out Ultra Refill is perfect for keeping your family safe from mosquito-borne diseases, providing a peaceful and uninterrupted sleep.