"N_A_J" wrote in message
om...
I treated the lawn with Ortho Weed B Gone one week ago. How soon will
it be safe to place grass clippings in my composter, or is that a
definite no-no? Thanks.

The weed killer will degrade in the soil. I'm not sure of composition of
Weed B gone but you could do a Google search on degradation time of the
specific components in soil. Or, call the manufacturer and ask. IMHO, by
the time compost is done cooking, there will not be enough weed killer to
worry about.
Frank