A box spring can provide hiding places for bed bugs, so covering the foundation may be an important part of protecting your bed. The best encasement for your setup should fully surround the box spring, fit its depth without straining, and have a zipper designed to close securely. These three options offer different combinations of bed bug barriers, water protection, and fit—so measure your box spring before choosing.
Quick Comparison
| Product | Fit | Notable features | Best for |
|---|---|---|---|
| HOSPITOLOGY PRODUCTS Sleep Defense Box Spring Encasement | Queen, 9–11 inches deep | Stretch-knit polyester, installation kit, washable | A simpler, flexible-fit cover |
| SureGuard Queen Box Spring Encasement | Queen, 8–11 inches deep | Waterproof, Invisi-Zip and SureSeal features, GREENGUARD Gold certified | Those who want bed bug and liquid protection |
| Guardmax Queen Box Spring Cover | Queen, up to 10 inches deep | Waterproof inner layer, locking zipper, reinforced seams | A snug fit with added moisture protection |
Our Picks: Best Box Spring Encasement For Bed Bugs reviews
HOSPITOLOGY Sleep Defense: A Stretchy, Straightforward Encasement
The HOSPITOLOGY Sleep Defense is a zippered fabric cover made to enclose a box spring. Its stretchable polyester knit is intended to make installation easier than working with a stiff, less flexible cover. The queen size is listed for a 60-by-80-inch box spring with a depth of 9 to 11 inches.
The product description says the encasement is independently lab-tested and designed to help block bed bugs and dust mites. It also comes with an installation kit, which may be useful when you are fitting a cover around a bulky foundation. The cover is machine washable and dryable, and the listing includes a five-year limited manufacturer’s warranty.
Compared with the SureGuard and Guardmax options, this one has fewer listed protective features: its description does not specify waterproofing. That makes it a reasonable choice if your priority is an encasement with a flexible fabric and a defined queen-size fit, rather than added liquid protection. Check the actual depth of your box spring before ordering, since the listed range is narrower than SureGuard’s.
Pros:
- Stretchable knit fabric is designed to ease installation.
- Includes an installation kit.
- Machine washable and dryable.
- Queen fit is specified for 9–11 inches of depth.
Cons:
- Waterproof protection is not listed.
- The stated queen depth range may not fit shallower or deeper foundations.
Verdict: Choose the HOSPITOLOGY Sleep Defense if your queen box spring is 9–11 inches deep and you want a washable, stretch-knit encasement without paying for listed waterproof features.
SureGuard: Waterproof Protection With a Wider Depth Range
The SureGuard is a six-sided zippered cover for a queen box spring. It is listed to fit foundations measuring 60 by 80 inches and 8 to 11 inches deep, giving it a slightly wider stated depth range than the HOSPITOLOGY option. Its smooth stretch-knit surface is described as soft and quiet.
Along with its bed bug barrier, SureGuard adds waterproof protection against everyday liquids and stains. Its fine zipper is paired with Invisi-Zip and SureSeal features, which are intended to close off gaps around the opening. The cover is also described as blocking dust mites, mold, mildew, pollen, and pet dander. The listing states that it is independently lab tested, GREENGUARD Gold certified, machine washable, and backed by a 10-year quality guarantee.
This is the most feature-rich option of the three if you want protection from moisture as well as pests. The trade-off is that you should check the box spring’s dimensions carefully: a cover that is too tight can be difficult to install and may put strain on the zipper, while excess room can make the fit less secure. SureGuard recommends using its mattress encasement as well, since covering only the box spring does not enclose the mattress.
Pros:
- Waterproof protection covers all six sides.
- Listed queen fit accommodates depths from 8 to 11 inches.
- Fine zipper and sealing features are designed to help close off gaps.
- Machine washable and backed by a 10-year quality guarantee.
Cons:
- Costs more in features than a basic encasement may require.
- Covering the box spring alone does not protect the mattress.
Verdict: Pick SureGuard if you want a waterproof queen encasement with a stated 8–11-inch fit range and added zipper-sealing features.
Guardmax: A Waterproof Cover With Reinforced Construction
Guardmax is a queen-size encasement for a 60-by-80-inch box spring up to 10 inches deep. Its soft knit top sits over a sealed inner layer, and the product description says the waterproof layer was tested to hold back 10,000 mm of water pressure. This added moisture barrier may help keep spills, sweat, and pet accidents from reaching the foundation.
For pest protection, the cover uses a tight-locking zipper and a sealed layer intended to keep bed bugs and dust mites from getting in or out. The zipper opens across one end and down both sides, a design that may make it easier to fit around the foundation. The listing also describes reinforced seams and fabric testing for wear and pressure. These construction details set it apart from the other two choices, although the stated queen fit stops at 10 inches deep.
Guardmax may suit you if your box spring is no deeper than 10 inches and you want both a waterproof layer and a more detailed focus on seam and zipper construction. Its maximum depth is a key limitation: if your foundation is deeper, SureGuard’s listed fit range is more suitable. As with any encasement, careful sizing and fully closing the zipper matter to getting the intended coverage.
Pros:
- Waterproof inner layer is designed to block spills and moisture.
- Locking zipper and sealed layer are intended to help prevent gaps.
- Opening runs across one end and down both sides for access.
- Reinforced seams are specified in the product description.
Cons:
- Queen fit is limited to box springs up to 10 inches deep.
- Does not list a specific warranty in the supplied product information.
Verdict: Choose Guardmax if your queen box spring is 10 inches deep or less and you want waterproofing with a locking zipper and reinforced seams.
How to Choose a Box Spring Encasement for Bed Bugs
Measure the box spring, including its depth
Measure the length and width of the foundation, then measure its depth from top to bottom. A queen-size label alone is not enough to confirm fit: the listed queen options here have different depth limits. HOSPITOLOGY specifies 9–11 inches, SureGuard specifies 8–11 inches, and Guardmax specifies up to 10 inches. Compare your measurements with the product’s stated range before buying.
Look for full coverage and a secure zipper
An encasement surrounds the foundation on all sides, so the zipper and its closure are important parts of the design. Check how the product describes its zipper and sealing features, and make sure the cover can close fully without forcing it. A gap or an unclosed zipper can undermine the purpose of an encasement.
Decide whether you need waterproofing
If you want protection from spills or other moisture, choose a product that clearly lists a waterproof layer. SureGuard and Guardmax both describe waterproof protection; waterproofing is not specified for HOSPITOLOGY in the supplied product information. If liquid protection is not a priority, the HOSPITOLOGY cover may offer the features you need without that added claim.
Consider fabric and installation
A flexible knit can be easier to work around a bulky foundation, while an opening that runs along more than one side may provide more room during installation. HOSPITOLOGY lists stretchable polyester and includes an installation kit. Guardmax describes an opening across one end and down both sides. Consider how much space you have around the bed when choosing a design.
Check care instructions and warranty details
All three product descriptions include machine washing as a care option, though you should follow the instructions supplied with the specific cover. HOSPITOLOGY lists a five-year limited manufacturer’s warranty, and SureGuard lists a 10-year quality guarantee. No specific warranty is included in the supplied information for Guardmax.
Think about the whole bed, not only the foundation
A box spring encasement protects the foundation it covers, but it does not enclose the mattress, bed frame, or surrounding areas. If you are addressing a bed bug problem, treat the cover as one part of a broader plan, and consider whether the mattress also needs a suitable encasement. Follow qualified pest-control guidance for an infestation rather than relying on a cover alone.
Frequently Asked Questions
Does a box spring encasement help with bed bugs?
An encasement is designed to cover the box spring and close off access to the areas inside it. The products here list bed bug protection, but an encasement alone is not a complete pest-control plan. Use it alongside appropriate treatment and guidance.
Should I encase the mattress as well?
A box spring cover protects the box spring, not the mattress. If you want the mattress enclosed too, choose a separate mattress encasement designed for that purpose. SureGuard specifically recommends pairing its box spring cover with a SureGuard mattress encasement.
How do I know which size to buy?
Measure the foundation’s length, width, and depth, then compare those measurements with the fit information for the specific product. These listings describe queen-size covers for 60-by-80-inch box springs, but their depth ranges differ.
Are all three options waterproof?
No. SureGuard and Guardmax list waterproof protection. The HOSPITOLOGY product description does not specify waterproofing, so do not choose it on the assumption that it will block liquids.
Can I wash a box spring encasement?
Each of the three product descriptions says the cover is machine washable. Check the product’s care label or instructions for washing and drying guidance to help maintain the cover.
What if my box spring is deeper than 10 inches?
SureGuard lists a queen fit for depths up to 11 inches, and HOSPITOLOGY also lists a range up to 11 inches, though it starts at 9 inches. Guardmax is listed for depths up to 10 inches. If your foundation is outside a product’s stated range, look for a size that matches rather than forcing the cover to fit.
Can an encasement alone get rid of bed bugs?
No single cover should be treated as a complete solution to an infestation. An encasement covers the box spring, but bed bugs may also be in other parts of the bed or room. Follow professional pest-control guidance for inspection and treatment.
Final Recommendation
For a waterproof cover with a broad stated queen depth range and added zipper-sealing features, SureGuard is the most versatile choice in this group. Guardmax is a strong option if your foundation is no more than 10 inches deep and reinforced construction matters to you. HOSPITOLOGY is a simpler fit for a 9–11-inch queen box spring when waterproof protection is not a requirement. Measure carefully, choose a cover that closes fully, and remember that protecting the box spring is only one part of addressing bed bugs.