That's both wrong and misleading.
Look, for example, at this PR from July.
"MedClean Technologies Inc. announced that the results of its private offer to exchange all of the Company's existing Common Stock Purchase Warrants with Initial Exercise Dates between July 11, 2008 and August 29, 2008 (Existing Warrants) for newly issued Common Stock Purchase Warrants with a new lower exercise price of $0.0075 per share, exercisable for one-half the original number of shares of its common stock, par value $0.0001 per share (Common Stock), and without a cashless exercise right. The Offer to Exchange expired on June 30, 2009. "
Meaning, MCLN made offers to REDUCE the # of warrants outstanding. If they hadn't done this, there would be up to as many as 2x the shares available from warrants. This resulted to a hit in their bottom-line, but they did it for SHAREHOLDER value.