In the Match 3, some levels have a pinkish whirlie gig that you have to remove. It's almost impossible..

In the Match 3, some levels have a pinkish whirlie gig that you have to remove. It's almost impossible to do that. The bombs don't work, the rockets don't work. A coloured sphere matched with an electric charger or a beaker works sometimes, but not often. I've had several theories, but none of them work consistantly. How do you get rid of them?