Clock Cleaners Commercial Combo Pack Isobutyl Nitrite Solvent Cleaner from Poppers Los Angeles is the pungent punch you have been searching for. Its crisp and powerful aroma will send you soaring to the heavens, while its long-lasting effectiveness ensures your complete satisfaction. Clock Cleaners Commercial Combo Pack is one of the most popular solvent cleaners on the market today, and the reasons are pretty obvious upon first use. As always, Clock Cleaners Commercial Combo Pack Isobutyl Nitrite Solvent Cleaner from Poppers Los Angeles should always be used responsibly. Follow the directions on the label and make sure you do your cleaning in a well ventilated area.