It's doubtful any of you will be weatherproofing boots at this time of the year,but I thought I'd pass along this warning: certain silicone-based sprays can cause very severe respiratory problems if improperly used. During February 2005-February 2006, 6 regional poison control centers in 5 states were consulted regarding 172 human and 19 animal (i.e., pet cat or dog) exposures to shoe or boot leather protection or sealant products resulting in respiratory illness. One product was associated with 126 cases of human illness and another product with 7 cases. An ongoing investigation, begun in December 2005, is being conducted by...