If the chocolate spawners are not controlled, they can spread chocolate on the top of the board. They will not spread through the rest of the board because the conveyor belt prevents it from spreading.
Clear the nearest column of icing, but do not activate the striped candies, unless it becomes an accident by themselves. They will release ten-move candy bombs, making it more distracting for you to bring down ingredients.
Making vertical striped candies when you can is smart. They are also essential if chocolate prevents candies from refilling.
Carefully guide every ingredient down to its exits, using vertical striped candies if possible.