This is correct. Also, it is something of a myth that roaches require alot of protein. In nature they are eating decaying vegetation and its products, etc., not hunting down other insects and mammals as prey items. Wing biting is a cause of husbandry, typically from crowded conditions or a lack of food, or both. Since most people keep them in crowded conditions, wing biting is more frequent (but the degree of it varies from species to species). When people argue this point they typically dont take into consideration that when the roaches are fed protein, its really no different than feeding them a larger amount of fruit or vegetables, so either way thier guts are full and wing biting occurrs to a lesser degree. It seems like this "roaches need alot of protein" myth has permeated every website that references what roaches eat without ANY specific data to back that up. Makes me nuts.... :wacko: Any of my species get very little protein very rarely and all are fine. Thier protein comes in the form of plant-based protein for the most part, with a small amount of shrimp meal and fish meal as an added ingredient (100% of the small amount of protein my roaches get comes from a bulk fish food I buy in 50 lb. bags, and "meat" based protein is a small percentage of the ingredients, its mostly wheat and soy).
HAVING TYPED ALL THAT, I can say that when I have a reptile that lays a dud egg, or when a lizard dies of old age, from a fight, etc. or a snake not eat a rat/mouse, I toss that into one of the Eublaberus sp. bins and it gets cleaned down to the bone.... faster than dermestid beetles and sometimes better than.