I really dont know why I waste my time. All depends on individuals set up Sdaji and as you have no idea as to my set up how can you even begin to contradict? My racks are not home made and cost twice the price of building my enclosures to house a similar number of animals. Oh, and by the way, I didnt state cost and efficiency. My statement was "I dont see any difference in the cost of keeping in enclosures or racks and I have several of each to compare".