Carpet ??'s

although a warm day helps, it really just needs to be sunny.
and if you're concerned about fading in that short time in the sun, lay it out upside-down.

fell it, and when it's warn to the touch, it's ready.....it also may be visible that it's ready if the wrinkles go away.

last fall, i laid mine out in the sun for a couple of hours, and it went in sweetly....