The results of the bacterial reduction method are limited and the process is slow. During a busy period when some 200 to 300 people roll in, there's no time for the reduction process to do its work and the air is filled with some peculiar smells.
細菌分解法的分解效果有限，速度又慢，遇上熱門時段，一天湧進二、三百人，根本來不及分解，環境還是充滿異味。