Lowes and Home Depot are 2 places off the top of my head that takes in used CFL bulbs. I usually wait until I have 4 or 5 burnt out bulbs before I take them and I am usually going there for something else as well. Are you saying you are throwing them in the trash? What about the mercury?
Our landfill, run by the city, tells us to put the bulbs in a plastic shopping bag (we still have those) and throw it in the trash. The amount of hazardous material is laughably small when you are talking about burying it in the desert here. Four or five mg of Hg tops per bulb.
The best place to put mercury is deep underground, like nuclear waste.
So I chose a land fill.
Don’t tell anyone I used to shin pennys with mercury when I was a kid, there is more mercury on a silvered penny than a hundred light bulbs.
A wonder that America survived children in the 50’s