My peas this year haven't done so well.... How about everyone else?

Hi guys I’ve been up since early this morning collecting slugs and snails from around the gardens tunnels and green house Yesterday was so hot they were all out as the sun dropped to get food and water and caused huge carnage I’m completely chemical free so one of my only defences is being there and picking them off one at a time I do use frass from Mad Company that is ground soldier ants that gives on a fragrance that slugs hate Keep a watch out guys as someone always wants to eat your hard work What do you use against pests in your countries ?