When togglable buildings that use up resources while active (such as a Mint) have a steady but insufficient income of that resource, the resource will decrease until it almost reaches zero, then fluctuate near but not exactly at zero.
For example, when I activate my Mint, my catpower income goes from positive to negative, and a bonus is applied to fur and ivory. After catpower reaches 0 though, it jumps between 0 and 2, but the Mint stays active and the bonuses appear to stay on as well.
Do I get the full benefit of the bonus in this situation, and if so, is it possible to leave many more Mints running and gain the bonus from all of them while technically suffering no additional penalty?