Will my troops die if my plastic drops to 0? How can I reduce plastic maintenance?

Q: Will my troops die if I have 0 plastic?

A: No, but they start to consume plastic again when you have accumulated plastic again.

Q: How can I save more plastic from troops upkeep?

A: Use plastic in time to prevent storing too much so that you won't waste them on maintaining your troops. Note that plastic protected by your Moneybox won't be consumed by your troops.