Welcome to the forum! And congrats on your snake purchases.
Yes, it would be nice if some people didn't jump down a newbie's throat for an obvious error we can all see. It would be nicer if they'd be polite about it and offer countering suggestions on a better alternative. If they obviously quote in their signature that they're "still learning", try learning some tact and people skills before jumping feet-first into things.
And Ddot, you're the man. =P
Tormoni, corn snakes do not belong on sand of any sort. They are not a desert species, and sand can cause a lot of nasty and expensive health problems. And from seeing sand already stuck on the mouse pink of the one in the picture, that's just the beginning.
What the back of the bag says is basically anything to get you to buy the product. They're in the market to make money, not for your pet's health. And T-rex is about the only reptile company I refuse to buy even lightbulbs from, that's how little I think of them.
I would recommend you remove the sand as soon as possible and switch to a wood substrate. Aspen is what most of us use. It's relatively cheap, free of odor, easy to clean, and it looks nice. Even newspaper or paper towels are fully acceptable, even though they're not as pretty. Some people even use Carefresh (recycled paper) or Bed-A-Beast (coconut thingies). Just remember, no cedar or pine. The oils that smell nice to us, are harmful to the respiratory systems of smaller animals.
Housing them together is also another thing up for debate. Some people do it with good success, and some people have really tragic results (search for cannibalism).
For me, my snakes seem stressed out enough when just together for picture taking, and I can't imagine forcing them to be "happy" together on a 24/7 basis. Just because they don't visibly fight doesn't mean they don't like one another. Snakes are by habit a solitary creature, and usually try to get as far from one another as possible. Unless its that time of the year. Snakes aren't mice or other such pets, they don't crave each other's companionship and always want to cuddle. If that's what you're looking for in a pet, then snakes aren't for you, and get some gerbils.
Also, if the snakes get old enough and are still housed together, and are of the opposite sex, accidental breeding will occur and problems can arise if you're not prepared financially or otherwise.
Feeding in the enclosure is something that's usually frowned upon for several reasons in your instance.
#1: Associates the lid opening and your hand entering with food. One time when you're reaching in to get your snake out, it'll think it's meal time and bite.
#2: Since you've got the nasty sand, and say that you want to keep it (for now), you risk ingestion and impaction of the gut. Calcium in that big of chunks would be hard for a tiny snake to digest fully and pass with no problems at all. I wouldn't even recommend that sand to house desert species on. Like I said earlier, the company is out to make money by charging $11 for a bag of calcium sand. When you could spend $8 on a huge bale of aspen that lasts for months.
#3: Since you've got your snakes together, you risk cannibalization by accident. When you eat spaghetti, you get sauce around your mouth that you lick off. While you can't smell it, its still there, even if you can't see it. Snakes can't lick their mouths off, and if you've fed both in their home and then one decides its still hungry, and finds its roommate and clamps down on what it thinks is a mouse and starts to swallow, you've got a problem.
Most of us remove the snakes from their home and feed them in a separate container. And if you're still insistent on housing them together, let them sit in their separate feeding containers for over an hour before adding them back to their home together. That should give plenty of time for the smell to wear off and hopefully avoid an accident.
Words to the wise:
One must think of the future when buying pets. Whats small and cute now quickly grows to fill a cage. Just research on here all that you can, buy Kathy Love's book and read, read, read. Ask questions, no matter how silly. We're all here to help. You've been given good advice by myself and others, I hope that you consider it, some if not all.
No one is judging you, we're just wishing that you didn't go to a petstore that 'recommended' potentially hazardous things for your snakes.
