Graham_s
Super Moderator
You don't need to do that.
Do you think crested geckos food in the wild gets put in the fridge?
I have worked for a very large breeder and have never even heard of such a thing.
In the wild they also don't have people containing them and feeding them crickets and a meal replacement powder.
It is sometimes useful for the very fast brown crickets, as crested geckos aren't the most precise hunters, and I suppose it would also reduce the risk of the crickets harming the gecko. It's no different to people using different livefoods, different feeding/supplementing regimes, different substrates...etc