So to repel any potential invaders, spray each part of your luggage. You don't need to spray everything inside. Spray the suitcase itself, so that the bed bugs will be repelled from the outside. If you spray your luggage, and put an impermeable plastic cover on it, you're ready to go.
Baby powder doesn't kill the bed bugs, but the talcum makes the bed bugs slide, preventing them from exiting any sort of trap. Talcum powder provides a drying effect to bed bugs which works as an eliminator, but it does not have the capacity to kill these nasty pests completely.
Once the items inside your suitcase have been taken care of, it's time to inspect your luggage. Use a flashlight to check seams, folds and pockets for bugs or eggs. Vacuum the suitcase using a brush and crevice tool attachment.