This is really horrific and not acceptable, watch out this video and you will realize the truth that what happened with the Ganpati idols after when the festivals ended.
After pooja, this is how the idols of lord Ganesha is treated!!
Posted by Shri Ram Ayyangar on Friday, September 25, 2015
If this is the way they are treated with the God then we have a deep request to everyone that please, from next year visarjit your Ganpati at your home tub/bucket and pour the water in to trees and plants.