Broken CFL Bulb Cleanup: The EPA Guidelines, Step by Step, for Hard Floors and Carpet
After a compact fluorescent bulb shatters, EPA’s first instruction isn’t to start cleaning. It’s to leave the room: have people and pets leave the room, open a window or door to the outdoors and wait a few minutes. If there’s broken glass on your floor right now, read this before you do anything else. It walks through the broken CFL bulb cleanup EPA guidelines in order (before, during and after), explains what changes on a hard floor versus carpet, and tells you who to call if you’re still worried afterward.
How much should you worry?
Not much. EPA says CFLs contain a very small amount of mercury — less than 1/100th of the amount in a mercury thermometer. That mercury is sealed within the glass tubing. When the bulb breaks, some of this mercury may be released as mercury vapor. The agency describes its steps as only precautions that reflect best practices, and it introduces them with “Don’t be alarmed.”
The same steps apply to more than CFLs. EPA says its recommendations apply to all mercury-containing light bulbs, so they cover a broken fluorescent tube too.
Every step below does one of two jobs. It either lets vapor clear out of the room or keeps the powder from spreading.
Before you touch anything
These are the first mercury bulb cleanup steps, and they take less than ten minutes:
- Get everyone out. EPA adds a detail people often miss: avoid the breakage area on the way out. If you walk through the debris, you carry powder into the rest of the house.
- Air out the room. Open a window or door to the outdoors and leave the room for 5-10 minutes. EPA’s own CFL quiz calls this one of the best things you can do.
- Turn off the HVAC. Shut off the central forced-air heating/air conditioning (HVAC) system, if you have one. A forced-air system moves the air from that room through the rest of the house, which is the opposite of what you want.
- Gather your supplies. You need stiff paper or cardboard, sticky tape (e.g., duct tape), damp paper towels or disposable wet wipes (for hard surfaces), and a glass jar with a metal lid (such as a canning jar) or a sealable plastic bag(s).
The usual mistake at this stage is grabbing the vacuum or a broom out of habit. Put them away for now.
During cleanup: scoop, tape, seal
EPA warns that vacuuming is not recommended unless broken glass remains after all other cleanup steps have been taken. The reason is that vacuuming could spread mercury-containing powder or mercury vapor.
- Scoop. Scoop up glass fragments and powder using stiff paper or cardboard. EPA asks you to be thorough in collecting broken glass and visible powder. The white powder matters as much as the glass.
- Tape. Use sticky tape, such as duct tape, to pick up any remaining small glass fragments and powder, then place the used tape in the glass jar or plastic bag.
- Seal. Place cleanup materials in a sealable container. That includes the cardboard you scooped with.
Hard floor or carpet: what changes
EPA’s detailed instructions list separate differences in cleaning up hard surfaces versus carpeting or rugs. The first steps are the same on both: scoop the glass and powder with stiff paper or cardboard into a glass jar with a metal lid, then tape up the small pieces. If all you have is a plastic bag, EPA notes that a plastic bag will not prevent the mercury vapor from escaping, so take the bag out of the home after cleanup.
CFL bulb broken on a hard floor: After scooping and taping, wipe the area clean with damp paper towels or disposable wet wipes and put the towels in the jar or bag. If glass still remains and you have to vacuum, EPA’s tips are to keep a window or door to the outdoors open, use the vacuum hose if you have one, then remove the bag (or empty and wipe the canister) and seal it in a plastic bag.
CFL bulb broken on carpet: There is no wipe step, and the vacuum rule and tips are the same as for hard floors. The difference comes later: the next several times you vacuum the rug or carpet, shut off the HVAC system, close the doors to other rooms and open a window or door to the outside before you start. EPA also says to change the vacuum bag after each use in this area, and to keep the HVAC off and the window open for several hours afterward, as practical.
After cleanup: get it out of the house
- Move debris outside. Promptly place all bulb debris and cleanup materials, including vacuum cleaner bags, outdoors in a trash container or protected area until materials can be disposed of. EPA says to avoid leaving any bulb fragments or cleanup materials indoors. Don’t leave the sealed jar sitting under the sink.
- Check your local rules. Some localities require fluorescent bulbs (broken or unbroken) be taken to a local recycling center. If your area doesn’t require that, you can dispose of the materials with your household trash.
- Keep airing the room. If you can, continue to air out the room where the bulb was broken and leave the heating/air conditioning system shut off for several hours.
Here’s the sequence, based on EPA’s cleanup page:
| When | What you do | Why |
|---|---|---|
| Immediately | People and pets out, avoid debris | No one tracks powder around |
| Next 5-10 minutes | Window or door open, room empty | Vapor clears out |
| Before cleanup | Central HVAC off | Room air stays in the room |
| Before cleanup | Gather paper, tape, wipes, jar | No trips mid-cleanup |
| During cleanup | Scoop, tape, seal; no vacuum | Powder stays contained |
| During cleanup | Vacuum only if glass remains | Last resort |
| Right after | Everything goes outdoors | Nothing left indoors |
| Next several hours | Keep airing, HVAC off | If practical |
| Disposal | Follow local rules | Recycling may be required |
If you’re still uneasy
EPA’s advice is direct: if you’re concerned about your health after cleanup, consult your local poison control center by calling 1-800-222-1222. EPA notes you can call any time you have questions or in an emergency, and that you can also ask your physician about mercury exposure.
It helps to keep the guidance where you can find it next time. EPA offers a printable version (128.18 KB, dated April 2014). EPA’s prevention advice is simple: switch off and allow a working CFL bulb to cool before handling, and handle CFL bulbs carefully to avoid breakage.
In short: leave the room, turn off the air, scoop and tape instead of vacuuming, and get everything outside.
Sources
- epa.gov – “Cleaning Up a Broken CFL”
- epa.gov – “Compact Fluorescent Light Bulbs (CFLs) | US EPA”