Our washing mashine drain has a mildew like odor coming from it. I've poured some draino down it and wrapped it in duct tape for now. But is there some sort of premade seal or something for it? It looks like it'* keyed for a collar or something. But we just have this hose that sticks down in the hole about a foot. A quick look at Lowes.com didn't reveal anything like that.

I have never seen a seal for them, just the pipe sticking out and the drain hose dropped into it, similar to what you have, except usually I have seen the PVC pipe stick out of the "box" about three inches or so.

I would just try the bleach thing, sealing it with duct tape might not allow it to drain properly.

there is a drain in there right?

Good point. Better check for leaks and mold iside the wall

We'd have water coming through the ceiling if it didn't drain right at the rate Nikki does laundry some days.

When you pull the tube out, it'* got a buildup on it that strongly smells. I figure that'* what going on down in there.

YEAH! ours has a snugfit finned thing with a prekinked curvature (like a bendy straw) with a collar. it connects to the hose.

ours is just going into a pipe, and then goes down into the wall, but still, same difference.

check at lowes or home depot for something like that. they've gotta be common.