Yet any de-icer can be harmful or mostly benign.
The drug is widely available and mostly benign.
So far, a mostly benign public has allowed him to have the argument both ways.
Pancreatic, kidney and liver cysts (seen on scans) are mostly benign.
Until now, Twitter has been mostly benign in its practices, at least when it comes to users' speech.
A mostly benign state provided the security for which people yearn, replacing the market's invisible hand with more visible supportive direction.
While their ownership of forests today is mostly benign, in the past, as ancient woodlands were replaced by sunless wastes of parade-ground conifers, it was terrible.
One year ago, Pettitte discovered a road map that enabled him to navigate through a session with reporters and through a mostly benign season.
The singer Karen Oberlin's new show, "Birds Do It: Songs Inspired by the Natural World," at the Metropolitan Room offers a vision of nature that is mostly benign.
The Glade products contain mostly benign chemical ingredients, but there are still a few concerning components that public health advocates argue shouldn't be there.
But other experts on children's development, and the people who have done the few empirical studies, say the repeat syndrome appears mostly benign.
