Some Chinese students in London invented a spray to freeze dog poop for easy cleanup
That article is from 2005, and as one of the comments says someone else invented it before (I also saw that on TV a couple of years ago).
Amazon.com actually has a spray on sale, too: Poop-Freeze Aerosol Freeze Spray (10oz)
liquid nitrogen is not cold. I just have to disagree about that statement.
It has a low evaporation point that cause it to absorbe alot off heat when it evaporate.
Why would you want to freeze it? On those cold mornings, picking up the dog poop in a plastic bag is a great way to warm up the hands. :loco: