While I am all for Biological Control, This is a small Drainage tributary that accesses the Main River. There are Homes all around it. No way I could get a Permit to release Grass Carp or would they or Tilapia stay in my treatment area. Besides They would become Alligator feed. Diquat and MSO are working but I wish I had a Air Boat to blow all the Water Lettuce to one spot to treat.