I've been shipping year round, all over the world for over 7 years now. All I ship are gel candles. I never had a problem until last summer, but I'll get to that in a minute. Before I pack, I make sure they are totally set up, then I pack, leave the box open, and put in an extra cool room overnite. I've never had one melt. Now last summer, with the unbearable heat all over the country, I even insulated the boxes. Of course, I had some melt, and had angry customers. Funny part was, when I talked to them on the phone, it came out that they had let them sit on a sunny stoop most of the day, and admitted it was their fault. They just wanted free replacements for their mistake, but ultimately reordered at their own expense. You just can't let heat sensitive things sit out when the temps are in the 90s or better, in the sunshine. I consider that part of the transaction their responsibility. When I order something that is heat sensitive, and know I won't be home, I have my neighbor take it in for me. If it's as hot this summer, I may close. I'll be watching it closely. Funny you mention a Texas shipment though. In the past two weeks, in using the USPS flat rate boxes to Texas, I've had two shipments with damage(broken items), both in the Austin area!