It was an oversight not to include recycling as a management option for lamps/light bulbs. We will fix this in a future update.
Lamps and light bulbs, especially those that contain mercury should not be thrown out in the trash. They should be safely managed so that the mercury doesn’t end up in a landfill or incinerator.
In the interim, you should keep tracking your lamps/light bulbs as "Disposed." Right now recycled lamps/light bulbs are not included in your diversion rate. If you want to include them, you can follow these steps:
1) Download these metrics in Reporting:
2) Calculate your new Diversion Rate = (Diverted Materials + Disposed-Lamps/Light Bulbs) divided by Total Waste (Disposed and Diverted)