Effective methods for litter box training kittens include starting with a small, easily accessible box and placing it in a quiet, consistent location. Introduce the kitten to the box immediately after meals and naps, gently placing them inside. Use unscented, non-clumping litter to avoid overwhelming their sensitive noses. Clean the box regularly to encourage use and prevent aversion. Positive reinforcement, like gentle praise or treats, can help reinforce good habits. Avoid punishing accidents; instead, promptly place the kitten in the box to foster understanding. Consistency and patience are key to successful litter box training.