there is an armoured zombie bot just for them and nothing else, im not sure how well the autofighter bot would do because the zombie bot knows to leave the cave when low prayer to climb the ladder and pray at the chaos alter, also it has all of there possible drops preprogrammed in and it banks with duelings to fog very well. I would do them, I have the zombie bot myself and it works like a charm, usually runs all night, it's how I got 99 strength on my main, and Im getting 99 attack and defense now, better hurry though, after old wilde comes back I assume this spot will be dead unless they decide to move it to a non dangerous area. Also, even after I use food and super pots, i still profited a 100k or so (maybe a bit more, 150k) per hour, so not bad for some of the best xp/hour in the game melee wise while still breaking even or even profiting a couple mil here and there.