I think you should maybe put in a request to have this thread moved to rabbit chat or perhaps behaviour/housing.
This section is just for help with working your way around the forum, which is possibly why you havent had any replies yet.
With reguards to the digging, can you put some sort of mesh that goes from the bottom of the fence into the ground so they cant escape? As long as none of your plants are poisonous and their munching doesnt bother you then free ranging shouldnt be a problem.
BUT
If your buns cant free range in your garden for whatever reason, a run is the best idea. They arent always that big though and can be quite expensive, you could always build your own. I think the best ones are the metal ones with panels that you can add on to make it bigger. They are about £30, im going to invest in a couple i think.
Hope this helps, i didnt want to read and run because noone replied to you. :wave: