I must've tried 5 different builds for the ramp to my piggies' upper deck. Stacked boxes, modified bird ramps, different configurations of bent grids... and never once would my piggies venture up to the upper deck. Now, finally, I've got it figured out.
It's covered with an old bathmat. The lower grid gives my piggies a place to hide / sleep, and the height makes the angle of the upper grid less steep so they feel comfortable climbing up. w00t!
It's covered with an old bathmat. The lower grid gives my piggies a place to hide / sleep, and the height makes the angle of the upper grid less steep so they feel comfortable climbing up. w00t!