Fly Trap Bait Refills (10 Pack) for Reusable Hanging Fly Trap Bottles | Non-Toxic & Natural Ingredient | Environmental & Pet FriendlyBrand: Reliable1st Color: Yellow Features: EASY TO USE Just tear the fly trap bait refill bag, add the fly trap refill, fill with water to use it. Because of natural ingredient instead of any chemical ingredient, it takes a little longer such as 1 day for fermentation, especially when the weather is cold. Please help be patient for the 1st day because natural ingredient is safe for family and pet but might be slow depending on weather and temperature.