We are in the begining our permaculture design and planting stages and we have sadly noticed how infested the land is with termites. The house is starting to show severe damage in the roof and the foundations from the infestation of termites. Our farm is in a region classified as dry tropical forest in Santander, North/Middle Colombia, very hot and dry but with good rainfall in rainy seasons. The house is built in a natural construction technique, typical to the area called 'tapia pisada' which directly tranlates to 'land which is stepped on' and consists of a lot of wood and roofs made with clay tiles sunken into wet mud on top of a layer of canes. So the termites love it!! We are looking for the best permaculture alternative that is truely effective. In our research we have come across the option of releasing beneficial nematodes into the garden/ foundations and roof of the house. Has anyone heard or themselves used nematodes? Thanks!!