Re: How do YOU keep your hedgie from digging under his liners?
Perhaps you can cut your liners into smaller ones, so that your hh can use one as his 'Linus blanket'. When the one gets tossed up, it won't then upset the rest of your cage.
I use shavings, a square foot of blanket, and a kleenex box, and mine will burrow under the blanket, have the shavings surrounding her so that she is on the plastic, and she'll have the kleenex box snug over top. It may be for security.