We use ultra flushable bio liners and have no problems with rashes. Little green earthlets sell them but I've found an identical product that's much cheaper Ã‚Â£2.35 verses Ã‚Â£2.99+ for 100 liners. The only difference is that they're not wrapped in plastic packaging. They can be washed and reused if you want to.
here's a link.........