| Material | Disposal Method | Disposal Method | Additional Details |
| Car Battery | Household Hazardous Waste sites | Household Hazardous Waste Site Location | |
| Cell Phones | Household Hazardous Waste | Household Hazardous Waste Site Location | |
| Christmas Tree | Organics - Yard Waste |
Curbside or Drop-Off Options: Visit the Tree Recycling webpage |
|
| Cleaning Products (e.g., household kitchen, bathroom, or garage cleaners) | Household Hazardous Waste | Household Hazardous Waste Site Location | |
| Compact Fluorescent Lights | Household Hazardous Waste | Household Hazardous Waste Site Location | |
| Compressed Gas Canister/Tanks (e.g., nitrous oxide) | Special Method | Compressed gas cylinders/tanks should be returned to the distributor. | See the “P” webpage » for propane tanks. |
| Computer | Household Hazardous Waste | Household Hazardous Waste Site Location | |
| Construction Debris | Special Method | Call Republic Services for instructions at 208-345-1265 | Construction debris is too heavy to be placed in curbside trash carts |