Some of you guys just go on meaningless rants on this message board and beat dead horses.
It is my turn to go on a rant. I have a degree in animal biology and I had a discussion with some of my colleagues not too long ago. It's not only PETsMART and PETCO that try and sell pets that they have limited knowledge. We all agreed that most pet stores know little about the pets they sell. The best way to go is from breeders directly. In defense of those two stores [PETsMART and PETCO], they sell a ton of other pets (fish, small animals, reptiles) and it is very difficult for all the employees to learn every single detail about every pet. Also, they get pets from breeders, so if they are getting beardies that are less than 6 inches, that is because the breeder sent them those. It is very difficult for a pet store to hold a pet in the back until it reaches a certain size, unless they only specialize in that one pet (this is because of a lack of supplies and space).
To put all this in some sort of perspective, I went to TWO pet stores here in Florida before I bought my bearded dragon. One of them is a reptile specialty store. I asked the employee about their bearded dragons and what I needed to buy. She told me all I needed was a basking bulb, 10 gallon aquarium, screen lid, sand and a hide. She mentioned nothing about UVB nor did she mention anything about dusting crickets or veggies for the beardie. The second store I went to, the guy told me that the temp had to be over 110F and that putting a beardie near a window with direct sunlight is enough for "natural" UVB. Really high temperatures for an extended period of time could give your bearded dragon brain damage.
Funny thing is that this thread is bashing PETsMART, but I was able to get the most accurate information from the employees from the PETsMART here in town. They told me to get reptile carpet, to buy a tank that is 20L for a small one (then to upgrade to a HUGE tank), dust crickets, use a multi-vitamin once a week, feed veggies (they even gave me a copy of the Beautiful Dragons list of veggies), to mist the dragon to help shedding or to give him baths, they told me to stay away from temperature gauges and use the digital ones or a temp gun, and so much more.
So, if I were to buy a pet again, I'd get it from PETsMART and save myself the money from ordering one online. It just depends on the location that you go to. Don't generalize about PETsMART, PETCO, et al, as a whole. I remember reading the "The Bearded Dragon Manual" and the author said that he's been using calcium sand for over 15 plus years with multiple dragons and he has never had any problem with impactions. I read the product reviews on this site and some of the posters here just went on and on about how calcium sand causes impactions, but I don't recall any of the people who wrote that ever saying that it happened to them. The same goes for some of the people on this site and the corporate pet stores. You will say that they mistreat their pets and all this stuff, but you've probably never seen it first hand. This does not apply to everyone of this board, but the majority.