Possibly you are searching for the verb: expunge?
It would me to clean and purify or to eradicate.
I hope to eradicate the ship's vermin without threat to the crew. You may commence to eradicate... now.
I was trying to eradicate the pencil markings.
how will we eradicate the war in Iraq
Their goal was the eradication of world hunger
The team of doctors and researchers worked tirelessly to eradicate the disease.
Legally.
It would be useful if we could eradicate people's poor English
The noun forms for the verb to eradicate are eradicator, eradication, and the gerund, eradicating.
To have a weopen on them
Eradicate means to eliminate or destroy. It is usually used in the context of pests or diseases; we eradicated smallpox.
The base or root word of "eradicate" is "radix," which is a Latin word meaning "root."