Snakes have rat "brand" preference?

I'm wondering if anybody else has experienced this.

My BP reliably "kills" and eats his f/t rats from Big Cheese Rodent Factory with a vengeance but there was a period there where BC was out of his size when I had to do a reorder and I went with South Florida Rodent. He went from always accepting every 2 weeks to refusing regularly almost as soon as I started him on the SFR ones. He's back on Big Cheese now and back to his old self.

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Its obviously not brand preference as much as it would be the conditions the rodents are raised in from each supplier

You could have any of the following at play:

Other rodents, or animals being raised in the same room (chicks, ASF's, or mice perhaps).
More rats per tub resulting in a stronger smell
Less frequent bedding changes resulting in a stronger smell
A big wheel of cheese in the rodent room resulting in foul smelling, french rats that are more desirable....:D

Your guess is as good as mine....just be glad you don't have to mutilate f/t rats with a strip of mouse fur to get a baby Burm to eat. Id much rather have a picky BP when it comes to feeding issues lol.

I was actually just talking about this to my girlfriend the other day. When we were getting them from the old supplier feeding was a chore so much coaxing and whether he would eat would be a dice roll. Since we switched he always has his head at the top of the enclosure waiting we dont even have a chance to lower it in before he grabs it!

Just a bit different smell I think, whether from different diet, different living conditions, or whatever. It may not even be that it smells more/less attractive as just being unfamiliar if they're used to their prey smelling a certain way.