Collection days are Monday and Wednesdays. Overrun semen is available all other days at Overrun pricing. All shipments are sent UPS Next Day Air. All semen must be paid for before shipping by credit card. NO SATURDAY DELIVERY. If a semen order needs to be cancelled, we ask that you please cancel the order as early as possible, preferably the day before collection (24 hrs.). No late cancellations accepted after 10:00 a.m. CST on collection days.