If a large amount of toner was spilled, scoop up as much as possible with a spoon. Vacuum the rest of it away (without the roller brush on). If it was liquid toner that spilled, blot up as much as possible with a clean, soft cloth.
Once the loose toner is removed, you are ready to work on the stain that was left behind.
As you are blotting with a clean cloth, you will notice the toner transferring to the cloth. Continue blotting. Switch to a new section of the cloth or use a fresh cloth when the old one gets dirty to keep from reapplying the toner to the carpet.
Moisten the cloth with dry-cleaning solvent each time. Do not pour the solvent onto the carpet or saturate the area.
If the stain is not releasing, even with several repeated attempts, move onto the next step.
Mix a few drops of dish washing soap with one cup of water.
Dip a clean cloth into the mixture and blot it onto the stain.
As before, blot with a clean section of cloth and repeat applications until the stain is removed.
When the stain is completely removed, allow the area to dry.
Place a towel over the area and press down to absorb any excess moisture that may have been absorbed by the carpet.
Vacuum the area to restore the texture of the carpet.