Well the thing is, there is no one here on Iceland that can do it (you guys let me know if you ever come here :lol: ) so what I have been dooing is I bought some teaching material from a veterinary collega and it has a video and step to step directions on how to probe, but since I can't buy them here and have to order over the internet (if I want to get it that is) and I didn't understand the sizes, I didn't want to order it, the snakes I have are Ball Pythons and Corn Snakes, so numbers made no sense to me :lol: