English Royale 30ml Isobutyl Nitrite Solvent Cleaner from Poppers Los Angeles. The English say that you should have a stiff upper lip. Well, that's not all that will be stiff when you try a cleaner that is so hard, so hard that the 10ml is branded as its own! It's three times stronger, so try the 30ml, and you will get that stiff upper lip going along with your partner while cleaning your palace with English Royale 30ml. If stiffness is desirable in your cleaning, this one will work for you. You will feel that warm and fuzzy feeling that you get after a night of pleasurable cleaning and you will explode with happiness when you see the shine you will get. Clean carefully.