scavenging

(verb) clean refuse from. Synonyms: scavenge. Example: "Scavenge a street."

(verb) collect discarded or refused material. Synonyms: salvage, scavenge. Example: "She scavenged the garbage cans for food."

(verb) feed on carrion or refuse. Synonyms: scavenge. Example: "Hyenas scavenge."

(verb) remove unwanted substances from. Synonyms: scavenge, clean.