You may not think the Back Bay would have a problem with rats - it's one of the richest sections of Boston - but it does, and city workers are now using dry ice to kill them.
Crews in the city have been burrowing holes and filling them with dry ice before covering them with dirt. When the rats enter those burrows, they die from asphyxiation.
City officials say this is a more humane method of killing than poison or rat traps.
PETA, however, disagrees. The group says the city shouldn't be killing rats at all.
"Fine with me. They spread germs," said Rachel Somer of Brookline, Massachusetts, in support of the dry ice resolution. "More dead, the better.
"Dry ice has an anesthetic effect, so that's a reasonable approach," said Fred Shapiro of Boston.
The Boston Department of Inspectional Services also says that dry ice is safer than poison, which can be ingested by children or other animals. Dry ice is also a cheaper alternative.
