Sorry to invalidate your poetic sheep/lemming imagery, but I'm not pushing recycling because the inspirational Martin Cullen did one of his great ad campaigns, I'm pushing recycling because it's the right thing to do.
The problem with making the green bin free is that it removes any incentive to Reduce and Reuse in preference to recycling.
And finally, I can only speak for Labour in Dublin South but we make a conscious effort to make 100% certain to remove the cable ties from our own posters, and any other leftover cable ties that happen to be there. I find it hard to believe that we're the only political activists who care enough to do this, but I can't say I've scrutinised many lampposts.