You can buy Simple Green at most home centers and supermarkets. Renew-It by Neo Tac Solutions is another great ball cleaner that restores a ball to its original tackiness and removes all dirt and grime. Renew-It is available at most pro shops. The particles help grip the lane more to create more friction. Particle balls have a shorter life than reactives and are difficult to resurface or adjust the surface on.
Reactive covers have a higher coefficient of friction than earlier coverstocks.
Reactives will not damage the lanes as much as Particle balls but will absorb oil faster than particle balls. New urethane coverstocks are seen less and less often now. Urethane provides a harder shell and less friction than reactives. No, we cannot assist you in finding a particular ball that you would like to purchase or have lost. Your best chance is to call several pro shops within your state.