There may be presence of Salmonella in the feeder mice - varieties and batches as above.
Salmonella is a bacterium that can cause illness in humans and in animals. The risk of humans becoming infected is present from handling the product, and also indirectly from handling infected reptiles, utensils or contact with the reptile faeces.
The products have been recalled.
If you have these products do not use them, return them to the store where they were bought for a full refund.
Monkfield Reptile is contactable on the link below.