Went and picked some cactus pads today (what we do for our tortoise) and it was relatively easy to burn the spines off did wrinkle the skin a bit though hope he likes them
I found that my Russians haven't really gone crazy over them as much as weeds that I picked. I heard that slicing them thin into strips using a vegetable peeler or something makes it more appealing to the tortoises that aren't as into eating cactus.