 If you've got hard water stains on your windows that you're just not sure what to use to remove, Terry at Zimmerman & Company True Value has just the solution. If you have hard water stains that you're dealing with on your windows or even the glass in the kitchen or the bathroom, we have several hard water removal products that work very well. We have squeegees and all that stuff to make sure that you clean your windows properly and get everything off. Zimmerman & Company True Value. Open seven days a week on Main Street in downtown Pendleton.