1.) Grab them off the perch at night, and gently clip, then put them back on the roost.
2.) Only clip the set of flight feathers on 1 wing. Do not clip both sides. By clipping 1, they are too off balanced to fly high. By clipping both, they will quickly learn to compensate for the lack of lift, and still fly high.
3.) If you have a light breed bird or a pullet, they still may be able to fly even after you clip them.
4.) If this is the case, gently attach tiny lead fishing weights to each leg, increasing the number of weights with each subsequent escape attempt by your renegade birds.
5.) In case you were wondering, # 4 was merely a joke, and not an actual recommendation.