are snow foam ball the same as moth balls?

no. Styrofoam? Styrene is a aromatic, made from benzene.

http://en.wikipedia.org/wiki/Polystyrene

No, snow foam balls are not the same as moth balls.

Snow foam balls are used in car washes and are typically made of foam or microfiber material. They are used to generate a thick foam that helps to lift and remove dirt and grime from the surface of the car. These foam balls are designed to be gentle on the car's paintwork and are an effective tool for achieving a thorough clean.

On the other hand, moth balls are small balls or pellets that contain chemicals called moth repellents. They are used to protect clothing and other fabrics from moth infestation. Moth balls typically have a strong and distinctive odor, which is intended to deter moths from laying their eggs on the fabric.

So, while both snow foam balls and moth balls are used in different contexts, they serve different purposes and are made of different materials.