Currently my tarantulas are all slings to small juveniles and I've thus far been feeding them lateralis roaches of various sizes. Definitely my favourite feeder, but preparing for the future I started thinking that perhaps they're not large enough feeders for adult tarantulas? Is this indeed the case, and at which point should I change to larger feeders? Some of the species I have might reach sizes of 7-8" as adults (Lasiodora parahybana, Acantoscurria geniculata, Poecilotheria regalis). Any T size where even adult Dubia roaches aren't large enough, if I'd at some point get a Theraphosa stirmi or blondi for example?