Sure - fungi and bacteria can break down the remaining Splenda with no problems.

I reckon if Splenda's ok for you to eat, then the fungi and bacteria will cope.

Yes, I put such packets in my pockets (even the paper off of a straw) and compost it. We're pretty obsessive arent' we?

I brought my cold, wet tea bag back from a business breakfast the other day. I didn't let my client see, though ;-)