They are a little difficult to mix with water (I use electric mixer), but in my humble opinion they are the best! They are very durable and effective. I make a somewhat special mixture in which I mix (approximately) 60% water and 40% ultrasonic conductive gel (makes it become thicker). Also, the latter component provides substances that help to keep the mixture microorganism-free. The more powders you add to the mixture, the more lubricating power it will have!