We have been buying this concentrated washer fluid for our shop for a number of years. A small bottle is the equivalent of over a hundred gallons of fluid that we use in our customers' vehicles every day. I recommend buying a pump so you can add just a few pumps to an empty gallon of washer fluid. Just a few clicks make a whole container. In fact, we use it in all of our cars and it does a great job of keeping the windshield clean. If you want to use what the pros use, this is it. Be careful when you step on your hands because he will get you dirty like a smurf, just handle him gently or with gloves. Great item, highly recommend.