Answer:
Yes. It is vitally important to plan and be aware of the possibility of infection and the spread of infection from the start to the finish of any play situation. Where accessories and items are used internally special attention needs to be paid to cleanliness and hygiene.
No accessory can ever be too clean.
The surroundings and the environment of the play scene should also look clean and germ free. No accessory used internally should ever be used on a number of people. Accessories are single user items only.
Certain accessories and items are easier to kept clean than others, for instance, stainless steel items are easy to clean and more hygienic than silicone rubber ones.