Airborne fumigation campaigns have blighted all crops, infected citizens, earned widespread opposition and done nothing to significantly decrease production levels.

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Cleanup crews will use liquid chlorine dioxide to clean the nine areas of Daschle's office where fumigation did not kill the anthrax.

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Sometimes it takes a while for the needed fumigation to work.

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It assists in clearing the fields fumigation merely kills the leaves, not the roots of the sturdy coca plant and provides technical, micro-financial and marketing assistance.

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Indeed, the problem of contamination on the Ecuadorian side of the border, resulting from this fumigation has been an ongoing one which will require some sort of solution.

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It assists in clearing the fields -- fumigation merely kills the leaves, not the roots of the sturdy coca plant -- and provides technical, micro-financial and marketing assistance.

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The hard exchange of words between the two left a bitter taste, despite Uribe's offer to consider changing the fumigation method from aerial to manual so as to minimize the contamination.

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"Coca production was not going to be reduced just because fumigation flights spray some fields, as long as these farmers don't have any other economic options, except to cut down forests to grow coca somewhere else, " said Adam Isacson of the Washington-based Center for International Policy.

BBC: NEWS | Americas | Coca-growing spreads in Colombia