I don't mean to be rude back, but if your research was complete, and you'd read more than a couple of posts in the Husbandry section of this Forum, you would know that any new addition needs at least a week to settle before your first feeding attempt. It's a very "newbie like" question, which is why you may be getting more advice than you want about sanitizing the set up that held your previous snake less than 48 hours ago. A snake that your own Vet said was full of health problems.
I'm sure your research showed you that BPs can go quite some time without eating and show little to no ill effect. I have no doubt that your research also told you that a BP who is settled and de-stressed is much more likely to eat when you offer.
Also, this is not Burger King where you can order things off the menu "your way". It's a public forum where you can ask anything you want, but you can not controll the answers you get back.