A bed bug encasement should fully cover the box spring and close securely around it, leaving as few gaps as possible. The right fit matters: measure the box spring’s length, width, and depth, then choose an encasement made for those dimensions. Our picks include options for queen, twin, and split king beds, with differences in waterproofing, fabric, and warranty coverage.
An encasement is a protective barrier, not a substitute for treating an infestation. For broader bed protection, pair a box spring encasement with a compatible mattress encasement, and follow the care and installation instructions.
Quick Comparison
| Product | Size | Key features | Best for |
|---|---|---|---|
| HOSPITOLOGY Sleep Defense Queen | Queen, 9–11-inch depth | Stretch-knit polyester, lab-tested, washable | A simple, fabric-feel queen encasement |
| SureGuard Queen Encasement | Queen, 8–11-inch depth | Waterproof, Invisi-Zip and SureSeal, 10-year guarantee | Water protection and a longer stated guarantee |
| HOSPITOLOGY Sleep Defense Twin | Twin, 9–11-inch depth | Stretch-knit polyester, washable | A twin box spring |
| SureGuard Split King Pack | Two pieces, each 39 × 80 inches; 8–11-inch depth | Waterproof, Invisi-Zip and SureSeal, GREENGUARD Gold certified | Split king box springs with added liquid protection |
| HOSPITOLOGY Sleep Defense Split King | Two pieces, each 39 × 80 inches; 9–11-inch depth | Stretch-knit polyester, washable, two encasements | Split king beds that need a straightforward fabric cover |
Our Picks: Best Mattress And Box Spring Encasements For Bed Bugs reviews
HOSPITOLOGY Sleep Defense Queen: A Stretchy, Washable Fit
This queen-size HOSPITOLOGY encasement is made from stretchable 100% polyester knit fabric. It is designed for box springs measuring 60 by 80 inches with a depth of 9 to 11 inches. The product is independently lab-tested, and the maker says it helps block bed bugs and dust mites.
The fabric construction is a practical choice if you want a cover that feels more like cloth than a stiff plastic layer. The listing says it is machine washable and dryable, and an installation kit is included. Some users report that the stretchy material slides on easily, though having a second person help can make handling a bulky box spring easier.
Compared with the SureGuard queen option, this model does not list waterproof protection. Its listed five-year limited warranty is also shorter than SureGuard’s 10-year quality guarantee. Check your box spring’s depth before ordering, since this one starts at 9 inches.
Pros:
- Stretch-knit polyester is designed to make installation easier.
- Independently lab-tested, according to the product listing.
- Machine washable and dryable.
- Includes an installation kit and a five-year limited warranty.
Cons:
- Not listed as waterproof.
- Fits box springs 9 to 11 inches deep, so it may not suit shallower models.
Verdict: Choose this encasement if you want a washable, fabric-feel queen cover and your box spring is within its stated size range.
SureGuard Queen: Waterproof Protection with a Sealed Zipper
SureGuard’s queen encasement is designed for a 60-by-80-inch box spring that is 8 to 11 inches deep. It offers six-sided waterproof coverage and uses a fine zipper with the brand’s Invisi-Zip and SureSeal features. The listing describes it as bed bug proof and says it is independently lab-tested.
The smooth stretch-knit surface is intended to fit closely around the box spring. The product is listed as free from vinyl, PVC, phthalates, and fire retardants, and it is GREENGUARD Gold certified. It can be machine washed and dried, and the stated quality guarantee is 10 years for normal household use, subject to the maker’s terms.
This is the more feature-rich queen choice if liquid protection matters alongside a bed bug barrier. Its 8-inch minimum depth may accommodate some box springs that are too shallow for the HOSPITOLOGY queen model. As with any encasement, careful installation and fully closing the zipper are essential; the cover itself does not treat an infestation.
Pros:
- Waterproof protection on all six sides.
- Invisi-Zip and SureSeal zipper features.
- Fits queen box springs 8 to 11 inches deep.
- Machine washable and backed by a stated 10-year quality guarantee.
Cons:
- More features may be unnecessary if you only need a basic washable cover.
- The box spring must fall within the listed dimensions for a close fit.
Verdict: Pick the SureGuard queen model if you want a waterproof encasement with a specially designed zipper and your box spring is 8 to 11 inches deep.
HOSPITOLOGY Sleep Defense Twin: A Washable Cover for Smaller Beds
This twin-size version of HOSPITOLOGY’s Sleep Defense encasement is made for a box spring measuring 38 by 75 inches and 9 to 11 inches deep. Like the queen model, it uses stretchable 100% polyester knit fabric and is independently lab-tested, according to the listing.
The cover is machine washable and dryable. Its knit construction may be easier to handle than a less flexible cover, but fitting any full box spring can still take some effort. Measure the box spring rather than relying only on the bed’s size label, especially if its depth is unusual.
Unlike the SureGuard models in this list, this HOSPITOLOGY twin listing does not specify waterproof coverage or a specialized zipper-sealing system. It does include a five-year limited warranty. It is the direct size match among these picks for a standard twin box spring within the stated measurements.
Pros:
- Made for twin box springs measuring 38 by 75 inches.
- Stretch-knit polyester fabric.
- Machine washable and dryable.
- Includes an installation kit and a five-year limited warranty.
Cons:
- Not listed as waterproof.
- Fits only the stated 9-to-11-inch depth range.
Verdict: This is a sensible twin-size option if your box spring matches the dimensions and you prefer a washable knit cover over added waterproof features.
SureGuard Split King Pack: Two Waterproof Encasements
This pack is designed for split king setups and includes two box spring covers, each sized for a 39-by-80-inch piece with a depth of 8 to 11 inches. Each encasement has six-sided waterproof protection, a fine zipper, and the brand’s Invisi-Zip and SureSeal features. The product listing describes the covers as bed bug proof and independently lab-tested.
The covers use a smooth stretch-knit surface and are machine washable and dryable. The listing also notes GREENGUARD Gold certification and says the materials are free from vinyl, PVC, phthalates, and fire retardants. A 10-year quality guarantee is stated for normal household use, subject to the manufacturer’s terms.
This is a strong fit for shoppers who want waterproof coverage on both halves of a split king foundation. Confirm that your setup uses two 39-by-80-inch box springs; the product is not a single, full-width king cover. Compared with the HOSPITOLOGY split king option, SureGuard adds stated waterproofing and zipper-sealing features.
Pros:
- Pack includes two covers for a split king setup.
- Waterproof on all six sides.
- Invisi-Zip and SureSeal zipper features.
- Machine washable and GREENGUARD Gold certified, according to the listing.
Cons:
- Designed for two separate 39-by-80-inch box springs, not one solid king base.
- Its 8-to-11-inch depth range still requires a measurement check.
Verdict: Choose this two-piece pack for a split king if you want waterproof protection and your two box springs match the listed dimensions.
HOSPITOLOGY Sleep Defense Split King: Two Simple Fabric Covers
This HOSPITOLOGY pack includes two encasements for split king box springs, each measuring 39 by 80 inches and 9 to 11 inches deep. The covers use stretchable 100% polyester knit fabric and are described as independently lab-tested. They are machine washable and dryable.
The stretch fabric is intended to make fitting the covers easier, and the two-piece design suits a split foundation without requiring one large cover. Some users report that a second person makes installation simpler. The listed warranty is five years, subject to the manufacturer’s conditions.
This option keeps the feature set straightforward. The listing does not specify waterproof protection, while the SureGuard split king pack does. If you do not need liquid protection and prefer a washable knit cover, HOSPITOLOGY may be the more suitable match. Check the depth carefully because this model starts at 9 inches.
Pros:
- Includes two covers sized for split king box springs.
- Stretch-knit polyester fabric.
- Machine washable and dryable.
- Includes a five-year limited warranty.
Cons:
- Not listed as waterproof.
- Fits box springs 9 to 11 inches deep.
Verdict: Consider this pack for a split king when the box springs match the listed dimensions and washable fabric matters more to you than waterproofing.
How to Choose a Box Spring Encasement for Bed Bugs
Measure the box spring, including its depth
Measure the length, width, and depth of the box spring itself before choosing a size. Mattress and bed labels do not always tell you the box spring’s exact dimensions. Depth is especially important: the HOSPITOLOGY options listed here fit 9-to-11-inch box springs, while the SureGuard options fit 8-to-11-inch box springs. A cover that is too tight may be hard to close, while excess fabric can make a neat fit more difficult.
Choose the right setup for your bed
A standard queen or twin box spring calls for a single encasement sized for that foundation. A split king usually has two separate bases, so look for a pack that includes two covers. The split king products here are listed for two pieces measuring 39 by 80 inches each. Confirm your setup rather than assuming a split king pack will fit a single king foundation.
Look closely at the zipper and closure
The zipper is a key part of an encasement’s barrier. SureGuard lists its Invisi-Zip and SureSeal features, while HOSPITOLOGY describes a secure zipper and includes an installation kit with the listed models. Whichever option you choose, follow the installation directions and make sure the cover is fully closed. Check the product details for any zipper-protection flap or closure instructions.
Decide whether waterproofing matters
Waterproofing can help protect a box spring from everyday spills and stains, but it is not required for every bedroom. SureGuard lists six-sided waterproof protection. The HOSPITOLOGY products in this guide are described as washable fabric encasements but are not listed as waterproof. Compare those needs before choosing rather than treating waterproofing as a substitute for correct fit or closure.
Consider fabric, care, and installation
All the featured options are machine washable, according to their listings. HOSPITOLOGY uses stretchable polyester knit, while SureGuard describes a smooth stretch-knit surface. Installing a cover over a large or heavy foundation can be awkward, so plan for help if needed and avoid forcing the zipper. Follow the care label and the manufacturer’s instructions to help preserve the fabric and closure.
Use an encasement as one part of a broader plan
A box spring cover only encloses the box spring. It does not cover the mattress, bed frame, or surrounding room, and it does not replace professional pest control when an infestation is present. For more complete bed coverage, use an appropriately sized mattress encasement as well. If you suspect bed bugs, inspect the bed and follow guidance from a qualified pest-control professional.
FAQs
Can a box spring encasement prevent bed bugs from getting inside?
A properly fitted, fully closed encasement is designed to create a barrier around the box spring. The products here are marketed for bed bug protection, but results depend on the cover fitting correctly and staying closed. An encasement does not protect other parts of the bed or room by itself.
Should I encase the mattress as well as the box spring?
If you want to cover both parts of the bed, use a separate mattress encasement sized for your mattress. A box spring cover only encloses the foundation. Make sure each product is made for the correct item and dimensions.
How do I know which size to buy?
Measure your box spring’s length, width, and depth, then compare those measurements with the product’s size range. For a split king, check the dimensions of each separate box spring and make sure the package includes two covers.
Are these encasements waterproof?
The SureGuard queen and split king products are listed as waterproof on all six sides. The HOSPITOLOGY products in this guide are not listed as waterproof. Check the product details for the exact model before ordering.
Can I wash a bed bug encasement?
All five products in this guide are listed as machine washable. Follow the care instructions for the specific cover, including directions for drying, and avoid methods that could damage the fabric or zipper.
Will an encasement get rid of an existing bed bug problem?
No. An encasement is a barrier for the item it covers, not a complete pest treatment. If you suspect an infestation, inspect the bed and contact a qualified pest-control professional for advice on treatment.
Final Recommendation
For a queen bed, the HOSPITOLOGY Sleep Defense model is a straightforward washable fabric choice, while SureGuard is the better match if you also want listed waterproof protection and a finer zipper-sealing system. For split king beds, SureGuard adds waterproofing; HOSPITOLOGY offers a simpler two-cover pack. Whichever you choose, verify the dimensions first and use a separate mattress encasement if you want the mattress covered too.
