OPT: a. Mix together 1 teaspoon baking soda , 2 teaspoons warm water, and 1 teaspoon lemon juice for a basic cleaning product. Fill a spray bottle with warm water and bring the water to a boil. b. Because certain types of collars require a special process, get special cleaning products that contain baking soda. Mix together baking soda and water until two gallons (2.8 l) are used. c. Apply the mixture to your dog's collar. Make sure that there is a thin layer of the mixture on the collar, as this prevents it from frizzing up too much. d. Always remove the collar from the dog before cleaning. Scrub the dog collar with this mixture.Choose from options above and answer: What most naturally follows?

How to clean dog collars
Mix baking soda and water.
Stir in a small spoonful of baking soda into hot water until it dissolves. This mixture can be used to clean all common types of dog collars.
Answer:
d.