A sponge may not be the most hygienic way to clean dishes, study suggests, but there is an alternative

The sponges collected in the study were tested for different types of bacteria.

(CNN)Kitchen sponges harbor more bacteria than kitchen brushes, which may be a more hygienic way to clean your dishes, according to researchers in Norway.

"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.