Sorry if I gave the wrong impression. I don't advocate throwing goo
out. But a solid ball of plastic resin should be pretty much inert in
a landfill, and probably not against any regulations either. If it is
still gooey, that is another story.

Oh, large amounts, that cannot be coaxed into becoming a solid, should
go to a hazardous waste facility to be disposed of properly. The
original poster said it was small amounts.