July 31, 2012 Buy a Pioneer Pet fountain and receive a $5 coupon for your next filter purchase Edit Delete Tags Autopost Keep Your Pet Hydrated This Summer with Pioneer Pet Fountains. Now through August 12, 2012, or while supplies last, buy a Pioneer Pet fountain and receive a $5 coupon for your next filter purchase (plus save 15% with Subscribe & Save).Expires Aug 13, 2012best sales best bargains best offers deal of the day best deal of the day