Dubias smell alot less then crickets because they do not die nearly as often. They are much cleaner then crickets in my opinion. Remember that these would be roaches feeding off of fresh veggies, dry/wet diet (I recommend Repashy bug burger) all of which is much cleaner then what you will see roaches in the "wild" eating. Some myths about dubias is that they do not climb and do not fly, this is not exactly true. Depending on the surface of the bin they can climb the rubbermaid type especially the smaller ones which have less mass to deal with. This can be solved by simply adding a few rings of clear packing tape around the walls, they can not climb the clear packing tape, that is certain. Also, male dubia certainly can glide and flutter fly, I know this isn't what most people want to hear but it is true. You have to get them really hot for them to flutter fly but they can reach about 6ft off the ground from inside the bin on the floor. So long as you keep the lid on though and turn the light on when you open the bin you should have no worries about one of them coming out, they absolutely hate light.