Department of Energy and Environment Director Tommy Wells says dry ice is relatively humane, cheap and pet-friendly.
Rats! DC wages war against resurgent rodents with dry ice →
"Foam is easily blown by wind or washed by rain into our storm drains and water bodies," D.C. Department of Energy and Environment Director Tommy Wells said in a 2015 statement after the city passed its ban on polystyrene products.
Baltimore will take another look at banning polystyrene →