One of these septic-safe Plink tablets cleans sinks, prevents future clogs and replaces unpleasant smells with a long-lasting lemon scent. Plink your bathroom and kitchen sinks regularly with these fragrant fizzy cleaners to break down buildup and keep your drains flowing freely. A quick, mess-free solution to foul sinks anywhere in the home, these biodegradable cleaning tablets do the dirty work in less than a minute.