MOSS- Armatillox, Jeyes or bleach?
 

I've just pressure washed moss from a tarmac tennis court now I need to prevent it from coming back. Suggestions include Jeyes Fluid, Jeyes Path Patio and Drive, Armatillox and Bleach. Anyone know which is best and how often I need to apply? Court is shady, often damp and surrounded by trees which obviously I can't do anything about.
Also, any tips on best long-term remover of weeds between slabs....tried most - but problem always returns in little time. Many thanks.