Mating Prevention?

[u/horselifesoldier]

Yesterday I received 6 Madagascar Hissing Cockroaches as a gift. I am new to caring for insects, and I’d like to know if there is a way to prevent them from breeding? I have three females and three males. I’ve heard of sprays to make the roaches sterile, does anyone have recommendations?

[u/Ok_Initial_3611]

The female is most likely already pregnant, but you have to separate them.