Discount supermarket Aldi has recalled some branded biscuits and snacks due to possible "pest contamination".
The products, made by Baketime Ltd, have been withdrawn from sale "on a precautionary basis" due to "potential unhygienic manufacturing conditions", the recall notice says.
Customers who have purchased products have been warned not to eat the goods and to return them to their nearest store.
The Food Standards Agency (FSA) said: "Baketime Ltd is recalling various branded biscuit, snack and confectionery products on a precautionary basis as they have been manufactured in unhygienic conditions.
"These products are sold by Aldi, Asvina, Booker and LBV."
It added all batches of the products had been recalled "as they may have been subject to pest contamination".
Affected products include Aldi Cheese Thins, Aldi Cheese Bakes, Aldi Oddbites and Aldi Ginger Nuts.
A spokeswoman for Aldi said: "We have recalled a number of Aldi-branded products that have been manufactured by Baketime and have immediately suspended all orders with this supplier while we investigate this matter.
"Customers that have purchased the products listed in our public recall notices should return them to their nearest store where they will be offered a full refund."