decontaminate
verb (used with object)
to make (an object or area) safe for unprotected personnel by removing, neutralizing, or destroying any harmful substance, as radioactive material or poisonous gas.
Used to describe actions that started in the past and continue into or have direct relevance to the present.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"In the past, kids, grannies, and everyone in between has decontaminated GM trial sites together," Take the Flour Back's Kate Bell said.
From BBC ● May 28, 2012