Universal Wastes in Wyoming include: batteries (e.g., certain lead-acid batteries not recycled under other regulations; button silver-oxide and zinc-air; and 9-volt, C, AA, coin, and button rechargeable lithium); pesticides; mercury containing devices (e.g., thermostats, switches); and electric lamps (e.g., fluorescent, high intensity discharge, sodium vapor, and mercury vapor). Certain other battery types (e.g. alkaline and carbon zinc cells that have been manufactured without mercury) may not be classified as hazardous wastes, and would therefore not fall under the Universal Waste Rule. However, as a matter of responsible practice, such batteries should be collected and sent to recycling facilities, rather than being landfilled.