To provide boots which have hygienic and health advantages such as the ability to effectively deodorize the inside of the boots. In the method, pressurized carbon dioxide is dissolved in a liquid alcohol to form a CO2-expanded alcohol solution at a pressure of about 400-1500 psi and a temperature of about 30-65\xb0 C. A bulk component concurrently processes a set of eligible accounts with a set of dependent tasks, and a removal component removes one or more accounts from the eligible accounts if an error is associated therewith. The disclosed techniques reduce fragmentation in the overall Walsh space caused by random connection and disconnection from the wireless network. Laser diodes are positioned by the support structure such that laser light from the diodes is directed through the targeting structures to generate the converging offset beams. The polyether main chain is polyethylene glycol or polytetramethylene glycol.