Posts from 2 years ago seem to be answering 2 separate questions: does it need to be gotten rid of? and does it need to be sold? There are some people who don’t sell “real chometz”. The question is, can these people sell play dough or do they need to completely rid themselves of it?
Then there is the question of it needs to be sold or put away at all. Most people seem to work under the assumption that you do need to put it away and/or sell it. Shticky guy seems to have an interesting kula to not necessitate this