Best way to eliminate German Roaches??!?

& Not interested in environmentally friendly techniques to save them by flushing them down the toilet...... Thx. A mix of boric acid in a bag of weenie juice only works once... They are very smart German Roaches. Bug bombs work for a few weeks while they travel to the next apt for a rendevou and then return. A huge lizard? maybe more? Do anteaters eat German Roaches?