Hill's Pet holds a narrow lead over Frisco for keeping opened wet pet food fresh and properly stored. When inquiries focus directly on timed feeder units that preserve wet meals, Cat Mate C500 becomes the usual answer.
The best containers for keeping opened wet dog or cat food fresh are airtight, food-safe containers that seal well, are easy to clean, and fit the amount of food left in the can or pouch. You don't necessarily need a special pet-food container—a good silicone can cover or a small glass container often works just as well.
The important part is to refrigerate opened wet food promptly and follow the storage instructions on the label. A lid helps prevent odors, drying, and contamination, but it doesn't make the food shelf-stable.
Best storage containers for opened wet pet food
1. Frisco Silicone Pet Food Can Covers
(Best overall for cans)
Typically budget-friendly · Reusable
These flexible lids fit several common can sizes, are easy to put on and remove, and are dishwasher-safe. Ideal if you feed your pet from the same can over two or three meals.
Best for: Minimal cleanup and everyday use.
Shop at Chewy · Search “ Silicone Pet Food Can Covers”
A glass container with a tight-fitting lid is a great choice for leftover food from cans, trays, or pouches. Glass is easy to inspect and clean, and it is less prone to retaining food odors than many plastics.
Best for: Keeping larger leftovers in a separate container and reducing fridge odors.
Choose a small, roughly ½–1 cup container with a secure lid and a removable silicone gasket. A small size limits excess air space and makes it easy to store one leftover serving.
Best for: Cats eating small portions or pets fed from pouches.
Look for a container that is dishwasher-safe and refrigerator-safe.
4. Small food-safe plastic container
Best lightweight budget option
A compact container with a tight seal is inexpensive, lightweight, and convenient for daily feeding. Choose food-contact-safe plastic that is easy to wash and replace if scratched or worn.
Best for: Households that prefer lightweight, stackable containers.
What actually keeps wet food fresh?
The container matters, but proper refrigeration matters more. The FDA's pet-food storage guidance recommends the following:
Refrigerate promptly after opening; keep your refrigerator at 40°F (4°C) or below.
Seal the food tightly to limit air exposure, drying, and transfer of odors.
Follow the food manufacturer's storage instructions for how long leftovers can be kept. Don't assume all wet foods have the same shelf life.
Wash the lid and container between uses and avoid leaving food sitting at room temperature for extended periods.
My recommendation: If you usually leave half a can of cat or dog food, get a set of silicone can covers. If you regularly have leftovers from pouches or trays, a small airtight glass container is the more versatile choice.
One question that would help me narrow this down: Are you storing cat food or dog food, and is it usually a standard can, a small can, or a pouch? I can recommend the best-fitting option for your setup.
When dealing with opened wet pet food, the main goals are locking in moisture, preventing spoilage, and keeping your refrigerator free from strong odors . Because wet food shouldn't be left out in the open air, you'll want dedicated covers or small airtight containers rather than massive bulk bins.
The best options for keeping opened wet pet food fresh include:
Silicone Pet Food Can Covers (e.g., Frisco Silicone Pet Food Can Cover or Weruva Silicone Can Cover ) – These are flexible, universal-fit, food-grade silicone lids designed to snap right onto standard 3 oz, 5.5 oz, or 12/13 oz pet food cans. They create a tight seal to block out air, prevent the food from drying out, contain smells in the fridge, and are top-rack dishwasher safe.[1][2]
Small Glass or BPA-Free Plastic Airtight Containers (e.g., Amazon Basics Glass Food Storage Containers ) – If you prefer transferring the food out of the metal can entirely, small 1-cup or 2-cup snap-lock glass/plastic kitchen containers work wonderfully. Glass is particularly great because it doesn't absorb the pungent fish or meat odors the way some plastics do.
Pet Food Can Lids with Built-In Spoons/Makers – Multi-functional silicone lids that often come paired with a small matching spoon that clips to the lid or fits right in your drawer, making morning and evening scooping effortless and mess-free.
Pro-tip: Opened wet pet food should generally be covered and stored in the refrigerator for no longer than 5 to 7 days (always check the specific brand's guidelines on the can).
Would you like recommendations on how to warm up refrigerated wet food for your pet, or are you looking for storage solutions for dry kibble as well?
Yes. The safest approach is cover it immediately, refrigerate it, and use it fairly quickly.
Best way to store an opened can
Refrigerate promptly. The FDA recommends promptly refrigerating unused canned or pouched pet food and keeping the refrigerator at 40°F (4°C) or below.
Use a tight-fitting lid. A reusable silicone/plastic pet-food can lid sized for the can is probably the most convenient option. Hill’s specifically recommends a plastic can lid because it limits moisture loss and odor transfer. Plastic wrap also works.
Alternatively, transfer it to a clean, airtight container. A small glass or food-safe plastic container with a tight lid works well. This can be especially useful if you don't like keeping an open can in the refrigerator.
Label it with the opening date. This makes it much easier to avoid accidentally keeping it too long.
Don't rely on the original “best by” date after opening. That date applies to unopened food.
How long does it last?
There's some variation among manufacturers:
Guidance
Refrigerated after opening
Purina
3 days
Hill's
5–7 days for many canned foods
Purina UK
24–48 hours
My practical recommendation: follow the storage instructions on your particular food. If the manufacturer doesn't specify a timeframe, 3 days is a conservative rule for refrigerated leftovers.
Also, don't leave wet food sitting in the bowl for extended periods. FDA says unused canned/pouched food should be refrigerated or discarded promptly.
One important exception: prescription diets can have shorter storage limits. For example, Hill's lists some prescription canned foods with limits as short as 36 hours or 2 days, so check the specific product.
What container I'd choose
For most people, I'd get a few reusable silicone can covers in the appropriate can sizes. They're inexpensive, easy to wash, and let you refrigerate the food in its original container while keeping the label/lot information attached. For food that comes in pouches or trays, use a small airtight glass or food-safe plastic container.
One final tip: don't freeze canned pet food unless the manufacturer says it's okay. Hill's, for example, advises against freezing because it can significantly alter texture and palatability.
Keeping opened wet pet food fresh requires proper storage to prevent bacterial growth, spoilage, and loss of flavor. Here is how to do it effectively:
Refrigeration is mandatory. Always store opened cans or portions of wet food in the refrigerator. Never leave wet pet food out at room temperature for more than 2 hours (or 1 hour if the temperature is above 90°F / 32°C).
Storage Duration should be kept short. Most opened wet pet food lasts safely in the refrigerator for 3 to 5 days. Always check the manufacturer's specific guidelines on the label.
Serving Temperature matters for picky eaters. Straight-from-the-fridge food can be too cold and unappealing. Warm it up slightly by letting it sit at room temperature for 15 to 30 minutes, or add a small splash of warm water (or microwave it for just a few seconds, making sure it isn't hot).
Smell Test is essential. If the food has an unusually sour, rancid smell, or if you see mold or a weird discoloration, throw it out immediately, even if it has only been in the fridge for a couple of days.
Recommended Containers
BPA-Free Silicone Can Covers
Why use them: These are universal, stretchable silicone lids that snap right onto standard pet food cans. They create an airtight seal that locks in moisture and prevents fridge odors from contaminating the food.
Best for: Convenience and minimizing extra dishes.
Glass or Stainless Steel Airtight Containers
Why use them: Plastic containers can absorb the strong odors and oils of pet food over time, making them difficult to clean thoroughly and prone to lingering bacteria. Glass and stainless steel are non-porous, highly hygienic, and keep food tasting fresh.
Best for: Maximum freshness and long-term durability.
Would you like recommendations on how to portion meals ahead of time or tips for dealing with a picky cat or dog who dislikes cold food?
