I can't remember the name of this show?!

Does anyone know the name of this show, its part of a series that me and my sister watched in the 90s!. Its a kids show and there was a woman who sold tupperware and had two sons!. But there was something weird about them!. It turns out that they sleep in big tupperware containers and it preserves them so they never age!. And at the end they are old!. Maybe it was goosebumps or are you afraid of the dark!. I can't remember the name please helpWww@Enter-QA@Com

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