powder harmful to roaches?
 

so i have lobster and dubia roaches. i bought about 1k mixed sized a while back, and well im letting my dubia grow as i only have 25 adult females left but i do use lobster roaches solely. i put them in the calcium and vitamin powder then pull out each winged adult to increase production. then i feed my dragons from the cup, letting them get all the larger nymphs then put the small babies that are left back in the colony to grow. does this harm the colony though? is the piwder on the roaches harmful? i hope not because i seem to be running out of lobsters even though everyone says that shouldnt ber be the problem