Sometimes it's not black and white. Here's where you need to use judgment:

• Disposable vapes with built-in batteries. These are tricky because you can't separate the battery. Some cities accept them at hazardous waste events, others don't. Always check first.
• Devices that are old or unknown brand. If you're not sure what's inside, treat it as hazardous. Better safe than sorry.
• If you're traveling in Texas. Disposal rules can vary by city. What works in Austin might not work in a smaller town. A quick call to the local waste department saves you a headache.