Another vote for email or letter. As much as you want to, there's no getting around this. Put the letters in bags on Friday and tell them just as they're headed out the door. Just be vague or short with your answers or change the subject after you've discussed it that first time. For the ones that already linger, brief answer and then "hey, I'm going to let you go, it sounds like the toilet's still running / the dog needs in / the cat is scratching at the gate again / my son needs me/ I think I smell a poopy diaper/ time to start supper, sounds like I've got a text from another DCP", etc.. Whatever suits your situation. Have a list ready.. Haha..

Good luck!!!

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