The answer to 'natural bed bug repellent' is to use essential oils like lavender, peppermint, or tea tree oil. These oils have natural insect-repelling properties that can help deter bed bugs. You can apply the oils directly to areas where bed bugs may hide, such as cracks, crevices, and seams of furniture. Reapply the oils every few days for best results.
It's important to note that while essential oils can provide some natural protection, they are not as effective as professional pest control treatments for a full-blown bed bug infestation. If you have a severe bed bug problem, it's best to contact a licensed pest control professional who can properly identify and treat the issue.