Completely cleaning the Launch Services Database & handler's

FROM : Eric Gorr
DATE : Fri Jul 11 21:13:37 2008

So, occasionally, I need to clean out my Launch Services Database. 
Most of the work can be done by executing:

lsregister -kill -r -domain local -domain system -domain user

However, this leaves behind information such as:

handler    id:            3160
   extension:    dtd
   options:
   all roles:    com.barebones.bbedit (0xee000080)

(i.e. I wand to load files with the .dtd extension with bbedit)

As reported by lsregister -dump.

Assuming they can, how can these custom handler's be cleaned out as 
well?

Thank you.