I started posting Leo's ears with Tampons until they became too short, Now i have him in Foam Pipe , they are best , also doesn't' hurt his inner ear or leave abrasions. and also flexible enough if he goes banging into a wall or something lol ,But stiff enough to keep them straight, I also have a small pocket on Leo's left ear that just doesn't' want to show it's stands so I place a Breath right strip on that inner ear before I post with the foam pipe, Gives extra assurance that you tapped it up without any kinks
I also put some skin bond on the post before posting so it assures a longer post time. (I do check daily for any odors, etc)