Wash the countertop with mild soap and water. Regular liquid dish washing detergent works well. Use a clean sponge or dish towel. Dry the wood well with a soft cloth.
Kill bacteria, often left behind by raw meat, with bleach. Add one tablespoon of bleach into one gallon of warm water.
Remove tough stains from butcher block countertops by pouring lemon juice on the surface and letting it soak for several seconds.
Maintain unvarnished kitchen countertops with non-toxic oil treatments on a weekly basis or whenever you notice the wood drying or color fading. Coat the counter with oil, let sit for five minutes then wipe away the remainder with a paper towel or cotton cloth. Wait 12 hours before using the counter.
Clean varnished butcher block countertops, on which food is not usually prepared, with water and gentle soap. Wipe dry with a soft towel. Varnished countertops do not need oil treatments.