Sent ZV in for a refill. Called and got a expected ship date of 6/4. I thought that was ok 2 weeks that is what it normally takes. Friday 6/6 called to ask if it was shipped. Was told no, the wax had "Cracked" in the container while cooling. They were to repour and ship Monday 6/9. I told them to send the crack wax along with the new pour. No luck. Friday 6/13 called to ask where the ZV was. Was told they were swamped and it would be shipped that day. Humm.... 3 to 4 day delivery estimate Wednesday. I have left enough for a two week supply while refilling process was going on. I wax every week cause I love to detail cars. Moral of the story, ship for your refill 5 weeks before you expect to run out.