Make more sanitary, in a way

• Clear of, as vermin
• Exterminate, in a way
• Disinfest, perhaps
• Be an exterminator
• Perform an exterminator's service
• Get rid of rodents
• Do an exterminator's job
• Rid of rodents

Wiktionary Word definitions in Wiktionary
vb. (context transitive English) To remove the rats from something.