As used in this chapter, the following terms shall have the meanings indicated:
The elimination of rodents or insects and other pest life from any building, lot or premises through the use of traps, baiting, fumigation or any other method of extermination approved by the Board of Health and subject to applicable laws relating to poisonous substances and fumigants.
Any condition which provides shelter or protection for rodents, insects or other pest life.
The owner or part owner of a building, lot or premises, whether an individual, partnership or corporation, the agent or occupant of a building, lot or premises or any other person who has the use or custody of the same or part thereof, whether an individual, partnership or corporation.
The treatment or shielding, with material impervious to rodent gnawing, of all actual or potential openings in the exterior and interior of walls, ground or first floors, roofs, foundations, basements, sidewalk gratings and other places that may be reached by rodents from the ground or by climbing or burrowing.