Pro tip: after removing surface debris, mix together lemon juice and coarse salt in a small bowl to make a slurry. Spread that across your cutting board surface and let it sit for 10 minutes before hitting it with a scrub brush and rinsing. Your board will be cleaner and brighter and ready for its block oil!
From the manufacturer:
A completely safe, natural, and non-toxic finish with lemon oil for any wood preparation surface. Block Oil is a unique blend of oils that penetrate, condition, and seal all natural wood and bamboo surfaces. Keeps wood and bamboo from cracking, drying, or absorbing food odors. Our lemon oil formula containing vitamin E will never become rancid. Protects knives and cutlery from corrosion. Only the purest ingredients enables us to produce this safe, natural finish.