Do those pre-prepared salads in a jar work?

[Tootief]

The ones where you make 7 jars of salad for the week.
Do they actually stay fresh and edible (assuming you put the food in, in the right order) or are they a soggy funny smelling mess after a couple of days?
I'm just wondering because the actual salad stuff doesn't always keep that well in the fridge.

I wouldn't fancy eating week old soggy salad, but I haven't heard of salad jars?

I would do 3/4 at a time. I don't use the jars but use some reusable plastic containers for greek salad and i make dressing in to smaller pots and add that on the day. I think as long as you layer it well it will be fine