Lion's Living Care Institute conducted a survey on stains around the toilet. The results of the survey were announced. The survey revealed that the main culprit of toilet stains is "urine splashes.


The number of married men who sit on the toilet seat to do their business has increased to about 40% of the total!

According to a survey of married women on their husbands' urination styles, the number of husbands who sit down to urinate has been increasing year by year, reaching 38%, or nearly 40%, in 2014. This percentage increased approximately 1.5 times over the past six years.


In 2005, the Living Care Institute found that "urine splashes" and "bacteria" were the causes of unpleasant toilet odors, and published the following three findings.

(1) When men urinate standing up, urine splashes around them amounting to about 2,300 drops per day
(2) In areas with high urine splashes, there are about 2,000 bacteria per square centimeter
(3) Strong odor (ammonia smell) is generated as bacteria break down urine

This information was one of the triggers (3) Bacteria decompose urine and produce a strong odor (ammonia odor).


Even with this style of sitting, one must not let one's guard down! A new spot for urine splashes is behind the toilet seat, which is often overlooked.

Have men sitting down to urinate made household toilets less dirty? The Living Care Institute found that while sitting down to urinate has reduced the amount of urine splatter on the outside of the toilet bowl, there is still a large amount of urine splatter on the underside of the toilet seat.

The study also found that even if the toilet seat is used several times a day, a significant amount of urine splatter accumulates on the back of the seat. As men sit down to urinate, they have fewer opportunities to raise the seat, which may increase the risk of urine accumulation on the back of the seat without being aware of it.


■The higher the temperature, the more ammonia is produced from urine!

Splashed urine is decomposed by bacteria and produces a strong odor (ammonia odor). A study of the relationship between the amount of ammonia generated from urine and temperature revealed that while almost no ammonia was generated at 5°C, ammonia was generated at 25°C and 37°C. The higher the temperature, the greater the amount of ammonia. The amount tended to increase with higher temperatures.


From this, it can be said that from early summer to fall, when temperatures rise, toilet odors are more likely to occur. In addition, when heated toilet seats, which are becoming increasingly popular, are used, the temperature behind the toilet seat rises to about 20°C, making it easy for odors to be generated even in winter.

The Living Care Institute says that the key to protecting toilets from ammonia odor is to wipe when you notice it.