Just notice my ramp on the ground the stickiness is worn off what type of tape or glue can I use? Also the rubber to the ramp will not stay on. I rember there a huge gob of tape in a ball when I got the package. Was that to hold the ramp because if so it was no use to me. I tried to use duct tape but my guys just bite on it and it rips off. Would the carpet ramp be any better? Before this 2 of the 5 love hanging out up there now its not safe for them.