The design of each product has different elements that are likely to deteriorate with time. The SNAEN Water Blaster has a thin rubber hose which is a weak design feature and is likely to break. In general, the opening of a water gun is likely to be the first part to deteriorate because of its nature of being opened and closed frequently. Each water gun is different and depends on the amount of usage, similar to any product a well looked after item is likely to last.