My rat (and also my gerbils and hammies) are getting some really long (and painful for me) nails. How do you guys recommend keeping them at safe lengths for both you and your pets? In the past I've tried clipping them myself but its a thankless job and usually my pets don't appreciate it. I've been savaged by a gerbil who wasn't about to let me hold him still in any way shape or form. I've also heard of putting sandpaper in wheels but I can't think that would be good for a dragging tail and I highly doubt my rat would use a wheel as she views running in place or in a ball as an affront to her intelligence.