Ooo actually some great ideas...I hadnt thought about actually forming a barrier using a pen panels going right around the steps area although I think that would deffo work.
Lily Freya - your husband sounds very handy with the old DIY - I'm afraid my hubby isn't quite so handy with a screwdriver or saw
but a photo would be really handy if you have the time in order for us to visualise. I can see a trip to PAH or B&Q this weekend coming on.
We have bit long trough type potted plants which we could use on the bottom step, but we have herbs in them (mint, oregano, basil etc) which she appears to LOVE to chew - those are the only thing she goes for, plant wise at the mo, I'm wondering if its the smell she is attracted to!!