Bayou Microbe

Bayou Microbe, a novelette by Janet Goodrich is a compelling tale of suspense and humor that unfolds near the mouth of the mighty Mississippi where it dumps into the Gulf of Mexico.
Armand and Celeste LeDay 's centuries old lifestyle dramatically changes when the Louisiana marshland is invaded by globs of oil from a spill and the environment is infected by its saviors.
The marsh is saturated with oil-eating-microbes and when they won't eat up the chemicals fast enough, their inventors create inducers and stimulate the little bugs. Then, the microbes get hungry for a little more than oil, while unaware Armand and Celeste lovingly banter about his Catahoula Cur.
I sure hope the control doesn't eat the control because as Johnette says: "If we can't flit 'em, whatta we do?"

But Johnette thought "...only God made bugs."