DVD Talk Forum - What show was this?

I am 28 and vaguely remember a show that I watched when I was a kid. I was wondering if someone new the name or had links to a site about it.

It was a live action kid show where some teenagers were shrunk down very small by an evil scientist. I think their goal each week was to get inside his house and they always encountered a cat or some type of animal. I think it was on during the day and alternated each day with other shows.

Anyways, i was just thinking about it the other day and wondered what the name was.

Any help is appreciated.