women are resorting to chemical measures to catch their cheating
husbands, New Scientist magazine said on Wednesday.
Wives who suspect their partners have been cheating on them are
buying special sprays that reveal telltale traces of semen on
their husband's underwear, it said.
The Safety Tanteisha detective agency in Osaka said it is
selling 200 S-check sprays a month at 35,000 yen ($280) each.
Nearly all of the customers are married women.
The kit consists of two aerosol cans that are sprayed separately
on the garment. If traces of semen are found, the second spray
turns them bright green.
"Takeshi Makino, president of Safety Tanteisha, says the semen
can be detected for up to two weeks if the underwear is not
washed," the magazine said.
The test is thought to be similar to those used by forensic
scientists to detect semen samples in criminal cases.