Leading directly from our works in East Lothian Weedfree Limited were asked to treat Spike Rush, Great Club Rush and Reed Mace in annual pond maintenance at Levenhall Links. This site is reclaimed land, built almost entirely of ash produced by a local power station. The Clay lined freshwater ponds are in a nature reserve area so environmental impact has to be negligible. Following approval from SEPA our teams moved in spraying with herbicides approved for use in aquatic environments. The bi-active herbicide is absorbed into the plants leaves immobilizing the chlorophyll, and using the plants circulatory systems spreads to the roots and stems, therefore effectively starving the plant, by interrupting photo-synthesis. Any excess spray quickly bio degrades into inert compounds having no residual effect on the sprayed areas. This enables the ranger service to fill the drained ponds within 5 days of treatment without an adverse effect on the local bio sphere.