Hi...I lurk here sometimes but am not a regular poster...Anyway just ordered 2 vials of Lr3 from SP & I've done a bunch of reading that it is fine under normal temperatures for up to 2 years...BUT somehow my postman delivered it at 8:30 am while I was at work and I didn't get it until 5pm. That means it sat in a metal mailbox for 9 hours while it was 95 degrees outside...maybe I'm being paranoid but does anyone have any info on if those temperatures could degrade it even at such a short period of time. Thanks!