Rat Ice: It’s Complicated

The extensive burrow networks of Norway
rats in city parks have been hard to treat
safely, until now.

New York is planning to rely more on dry ice as a safer and effective treatment for rat colonies living in city parks. But the logistics of labeling and marketing frozen carbon dioxide as a rodent control product have proved to be challenging.

Toxicity of carbon dioxide to rats is nothing new. When placed into a rodent hole and covered with soil, pelleted dry ice (frozen CO2) slowly…

Source: Insects in the City

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