Residential containers shall have a capacity of not more than 30 gallons. They shall be of galvanized metal or other non-rusting material of substantial construction. Each container shall have a tight-fitting lid and shall be leak-proof and fly-tight. All containers shall have handles of suitable construction to permit lifting. Plastic bags manufactured for garbage and refuse disposal may be substituted for residential containers. Plastic bags, when used, shall be securely closed. All garbage shall be drained of all liquids before being placed in bags or containers.