Indispensable when moving house. Do not open the box indoors, especially if you are sensitive to smells. I have an incredibly poor sense of smell, but even I started smelling like tar. It's gone, but if you take them straight out of the box, it's a strong smell. Open them outside or in the garage and let them air out a bit. word to the wise. Have fun!Read more: You know how you usually transport large objects with a handcart that they always stop at the threshold of the door and you have to try to pick up the object to avoid the object hitting the wall or car falls off the wall? No longer. Even if these ramps are not the ideal step height, they make a big difference. You just give a big push and it goes up. No ups and downs, no stress.