"Salmonella and other bacteria grow and survive better in sponges than in brushes, the reason is that sponges in daily use never dry up," said Trond Møretrø, a research scientist at Nofima, a Norwegian food research institute.
"A single sponge can harbor a higher number of bacteria than there are people on Earth," said Møretrø, an author of a new study, which published online in the Journal of Applied Microbiology. You can read more HERE.