These straw cleaners are perfect to clean each size straws and pipes you have (including plastic straws, glass straws, stainless steel straws, smoothie straws, silicone straws), also they would not scratch the insides. Our bendable straw cleaning brush kit not only for cleaning straws, but also convenient for cleaning funnel necks, teapot necks, tube or cylinder and other hard to access corners. Reusable and flexible cleaning brush tools.