Quick answer: The best mattress encasement for bed bugs for most people is the SureGuard zippered encasement: its zipper design closes the end gap bugs can slip through, it fits deeper 13 to 16 inch mattresses, and it comes with a 10-year guarantee. The SafeRest Premium is a lab-certified alternative for standard mattresses, and the Utopia Bedding encasement is the budget pick. Encase the box spring too and keep both on for at least a year.
Our top picks at a glance
- Best overall: SureGuard Mattress Encasement — Invisi-Zip and SureSeal zipper, 10-year guarantee. Check price
- Best lab-certified: SafeRest Premium Zippered Encasement — certified bed bug proof, waterproof, cotton top. Check price
- Best budget: Utopia Bedding Zippered Encasement — 6-sided, waterproof, huge owner base. Check price
- Best add-on: Bed Bug Blocker Pro Interceptors — catch bugs climbing the bed legs and confirm progress. Check price
An encasement is one of the cheapest, most effective tools in any bed bug plan. Once it’s zipped shut, any bugs and eggs inside the mattress are trapped until they die, and the smooth outer surface leaves no seams or tufts for new bugs to hide in.
But only a real encasement works. A regular fitted mattress protector covers the top and sides and leaves the bottom open, which is exactly where bed bugs hide. Here’s how to choose one that actually seals.
How we chose
We didn’t run our own lab tests. Our picks are based on manufacturer specs and certification claims, guidance from the EPA and university extension entomologists on bed bug management, and patterns in verified owner reviews over time. We focused on:
- Full six-sided coverage with a zipper, not a five-sided fitted protector.
- Bite-proof and escape-proof fabric and zipper, including how the zipper end is closed.
- Fit for real mattress depths, since a too-tight encasement stresses the zipper and a torn one is useless.
- Comfort: noise, breathability and how the top surface feels to sleep on.
- Durability reports from owners after months of use and washing.
Best mattress encasements for bed bugs compared
| Product | Best for | Mattress depth | Key feature | |
|---|---|---|---|---|
| SureGuard Encasement | Most beds, deeper mattresses | 13 to 16 in (Queen listing) | Invisi-Zip + SureSeal, 10-yr guarantee, terry top | Check price |
| SafeRest Premium | Standard mattresses, certification | About 9 to 12 in, up to 15 in | Lab-certified bed bug proof, waterproof, cotton top | Check price |
| Utopia Bedding Encasement | Budget, guest rooms, kids’ beds | Up to 15 in (Queen) | 6-sided zippered, waterproof | Check price |
| Bed Bug Blocker Pro Interceptors | Monitoring, every encased bed | Fits under bed legs | Chemical-free, 8-pack | Check price |
Our picks for the best mattress encasement for bed bugs
Best overall
SureGuard Zippered Mattress Encasement
Best for: most beds, including thicker 13 to 16 inch mattresses and pillow-tops.
Why we picked it
- Invisi-Zip and SureSeal zipper design closes the end gap where bugs can escape
- Soft cotton terry top feels more like a regular mattress pad
- 10-year guarantee, and a matching box spring encasement is sold separately
Keep in mind
- Terry top and waterproof layer can feel a bit warmer than bare cotton
- Check the size chart carefully; depth ranges vary by size
Why we like it: the weak point of most encasements is the zipper. The SureGuard’s SureSeal design covers the end of the zipper track, the small gap where the zipper pull stops and where bugs can squeeze through. That detail is exactly what pest management pros look for.
Who it’s for: anyone treating an active infestation, or preventing one in a rental, dorm or guest room. The deeper fit range also suits modern mattresses that are thicker than older models.
What to know: owners frequently mention that it’s quiet for a waterproof encasement, though a few hot sleepers notice it. Buy the matching box spring encasement if you use one: an untreated box spring is a common hiding spot.
Best lab-certified
SafeRest Premium Zippered Mattress Encasement
Best for: standard-depth mattresses and shoppers who want a lab-certified bed bug claim.
Why we picked it
- Lab-certified bed bug proof, according to the manufacturer
- Waterproof membrane with a breathable cotton top
- Strong owner ratings across thousands of reviews, in all standard sizes
Keep in mind
- Best fit on roughly 9 to 12 inch mattresses; tight on the deepest ones
- Zipper must be closed completely every time
Why we like it: SafeRest is one of the most established names in encasements. The combination of a certified bite-proof, escape-proof fabric, a waterproof layer and a cotton sleeping surface covers bed bugs, spills and allergens in one product.
Who it’s for: most standard mattresses, kids’ beds and anyone who wants the added reassurance of lab certification. It’s also a strong pick for allergy households, since encasements help reduce exposure to dust mite allergens.
What to know: measure your mattress depth first. If you have a thick pillow-top, the fit may be tight, which strains the zipper. In that case, the deeper SureGuard size range is the safer choice.
Best budget
Utopia Bedding Zippered Waterproof Encasement
Best for: guest rooms, kids’ beds, and budget-conscious buyers who still want full six-sided coverage.
Why we picked it
- Fully six-sided zippered design, not a fitted protector
- Waterproof, fits mattresses up to 15 inches deep (Queen)
- One of the largest owner review bases of any encasement
Keep in mind
- Fewer certification claims than SafeRest; check the listing details
- Some owners report thinner fabric and less durable zippers over time
Why we like it: the Utopia encasement delivers the essential feature, a fully zippered six-sided cover, at a budget price tier. That makes it practical to encase every bed in the house, including the guest bed and kids’ beds, not just the one where you found bugs.
Who it’s for: families treating multiple beds, landlords turning over units, and anyone who needs several encasements at once.
What to know: owner reviews are broadly positive, but durability reports are more mixed than for the premium picks. Inspect it regularly for rips and zipper gaps, and replace it at the first sign of damage.
Best add-on
Bed Bug Blocker Pro Interceptor Traps (8-Pack)
Best for: every encased bed: catching bugs that try to climb up and showing whether treatment is working.
Why we picked it
- Chemical-free cups go under each bed leg
- Traps bugs climbing up or down, a reliable early warning
- 8-pack covers a bed plus a couch or second bed
Keep in mind
- Only works if bedding and the bed frame don’t touch walls or the floor
- A monitoring tool, not a standalone treatment
Why it matters: an encasement protects the mattress, but bugs can still hide in the bed frame, headboard and nearby furniture. Interceptors stop them from reaching you and tell you when the problem is really gone, which is the hardest question in bed bug control.
What to know: pull the bed a few inches from the wall, tuck in sheets and blankets so nothing touches the floor, and check the cups weekly with a flashlight.
Buying guide: what to look for
Six sides and a zipper, not a fitted protector
A fitted mattress protector goes on like a sheet and leaves the underside exposed. It does nothing to stop bed bugs. You need a true encasement that fully surrounds the mattress and zips closed.
Bite-proof, escape-proof fabric
Bed bug nymphs are tiny. The fabric has to have a tight enough weave, or a membrane, to keep them from passing through or biting through. Look for encasements with lab testing or certification claims specific to bed bugs, not just dust mites.
The zipper end matters most
Bugs escape through gaps at the end of the zipper track and between zipper teeth. The best designs use fine zipper teeth and a cover or lock at the end. As a backup, many pest management pros recommend putting a strip of strong tape over the closed zipper pull.
Measure depth before you buy
Measure your mattress from the bottom seam to the highest point of the top, including any pillow-top. Buy an encasement rated for that depth. Too tight stresses the zipper and seams; slightly loose is fine.
Encase the box spring too
Box springs have lots of hiding spots inside the wooden frame and under the dust cover. They’re hard to steam or inspect, which makes encasing them one of the highest-value steps. Most encasement brands sell matching box spring versions.
Comfort: waterproof layers and noise
Waterproof membranes add protection against spills and accidents but can feel warmer or crinkly. Cotton or terry tops reduce noise and feel more natural. If you sleep hot, a breathable top layer makes a real difference.
How to use an encasement to actually fix a bed bug problem
- Treat first. Vacuum the mattress and box spring seams, then steam them slowly with a canister steamer. Let them dry fully.
- Put the encasement on carefully. Two people make it easier. Slide it on without dragging it across the bed frame, which can snag and tear the fabric.
- Zip it completely. Close the zipper to the very end, engage any lock or seal, and add a strip of tape over the pull if you want extra security.
- Encase the box spring the same way.
- Isolate the bed with interceptors under each leg, and keep bedding off the floor.
- Leave it on for at least a year. Adult bed bugs can survive many months without feeding, so removing the encasement too early can release survivors.
- Inspect monthly. Check for rips, holes and zipper gaps. Patch small holes with strong tape and replace damaged encasements.
If you use a bed bug insecticide alongside encasements, read and follow the entire label. Never spray an encasement or mattress surface where people sleep unless the label specifically allows it. Keep children and pets out of treated areas until surfaces are completely dry, ventilate the room, wear gloves and never mix products. Steam cleaners can cause burns: keep kids and pets away and let units cool before refilling.
Encasements are one piece of the plan. Follow our full guide on how to get rid of bed bugs yourself, and see our best steam cleaner for bed bugs picks for treating the mattress before you encase it. The McCulloch MC1375 review covers our top steamer in detail.
The same encasements also help reduce exposure to dust mite allergens. See how to get rid of dust mites in a mattress and our broader guide on dust mites and allergens. If you have allergy or asthma symptoms, talk to your doctor.
Call a licensed pest management professional if bed bugs are in more than one room, if you live in an apartment, condo or other multi-unit building, if you keep finding bugs in interceptors after three to four weeks of treatment, or if anyone in the home has health symptoms. Renters should notify their landlord right away, since treatment is often the landlord’s responsibility and neighboring units may need inspection.
Frequently asked questions
Do mattress encasements really work for bed bugs?
Yes, when they’re true six-sided, zippered encasements rated for bed bugs. They trap any bugs inside the mattress until they die and remove the seams and tufts where new bugs would hide. They don’t treat the rest of the room, so combine them with vacuuming, steaming, hot-dryer laundry and interceptors.
How long do I need to keep a bed bug encasement on?
Keep it on for at least one year, and ideally leave it on permanently. Adult bed bugs can survive many months without feeding, so removing an encasement too soon can release survivors. Check it monthly for rips and zipper gaps, and replace it if it’s damaged.
Is a mattress protector the same as an encasement?
No. A fitted mattress protector covers only the top and sides, like a fitted sheet, and leaves the bottom open. Bed bugs simply hide underneath. An encasement fully surrounds the mattress and zips shut, which is the only style that works for bed bugs.
Do I need to encase the box spring too?
Yes, if you use one. Box springs have many hiding spots inside the frame and under the fabric that are hard to inspect or steam. Encasing both the mattress and box spring is one of the most effective and affordable steps in a DIY bed bug plan.
Can bed bugs bite through a mattress encasement?
Not through a quality encasement rated for bed bugs. Certified bite-proof fabrics are designed so bugs inside can’t feed through them and die over time. Bugs can still escape through torn fabric or an open zipper end, so inspect the encasement and keep the zipper fully closed and sealed.
Should I wash a bed bug encasement?
Follow the care label, which often calls for gentle washing and low-heat drying to protect the waterproof layer. During an active infestation, avoid removing it more than necessary. If you do, inspect the mattress, work quickly, and zip the encasement back on right away.
Encasement ordered? Next, get the bed and room treated properly with our step-by-step guide on how to get rid of bed bugs yourself.
