Once I became aware of WD-40 by my car repair shop, I have it from time to time taken in construction markets and tested at home or on the car at all appear appropriate applications - always successful !!! Then a technician had to make my (Swiss) Security lock the front door again passable - and what - he swears on WD-40th Oa 5-liter container is once inexpensive and I have now for a long time enough stock. The hand sprayer is handy, practical and versatile set of targeted beam to the surface wetting cloud.
