WD-40 Company reported net sales for the second quarter ended Feb. 28, 2014 rose 9% to $94.2 million. Year-to-date net sales increased 4% to $189.7 million.   Net income for the second quarter slipped 1% to $10.3 million. Year-to-date net income rose 2% to $21.8 million.   Second quarter multi-purpose maintenance products sales, which include the WD-40 and 3-In-One brands increased 11% to $83.8 million, and rose 7% to $167.8 million year-to-date. The multi-purpose maintenance products are consid...