TL;DR — We priced three refillable floss formats at named US retailers on 31 August 2026. The open-handle format, which takes any standard drugstore spool, runs cheapest: confirmed refill floss from $0.0199 per meter, or about $3.32 a year at 167 m. Glass-jar systems with dedicated refill rolls run $0.1242–$0.1663 per meter, roughly $21–$28 a year. The proprietary-dispenser format could not be ranked at all, because neither brand we checked publishes a refill-only price we could confirm.
All prices in this article were read at the named US retailers and brand stores on 31 August 2026 and change without notice.
A refillable floss system is two purchases, not one: a holder you buy once, and floss you buy forever. The second purchase is the one that decides what the system costs to run — and it is decided almost entirely by which format the holder is, because the format determines which spools fit and where you can buy them. Below we rank the three formats on the US market by confirmed refill cost per meter and by how many places actually sell the refills. Every number comes from a price check we ran ourselves, and the arithmetic and the gaps are written out.
Method
We read list prices for refillable floss holders and floss spools at Walmart.com, Target.com, Walgreens.com, Amazon.com and six brand-direct stores (better-objects.com, sunstargum.com, ecoroots.us, thegoodfill.co, getquip.com, dentallace.com) on 31 August 2026. Only prices we could confirm verbatim on the page are used; rows where the price could not be re-found are excluded and listed at the end. Yards are converted at 1 yd = 0.9144 m, and per-meter prices are computed as pack price divided by total length in the pack — we did not recompute anything by hand.
To turn a per-meter price into a yearly figure we use one uniform assumption, stated here before any number: 18 inches of floss per day, 365 days a year — about 167 m of floss annually (365 × 0.457 m). The daily-use basis follows the American Dental Association's guidance to clean between teeth once a day; the 18-inch strand length is the convention most floss packaging describes, and it is our editorial assumption, not a measurement. Yearly cost is then simply price per meter × 167. Holders are priced separately as a one-time entry cost and kept out of the running-cost ranking.
Two scoping notes. First, this article ranks formats, not products — the named products are price examples. Second, several big retailers could not be read for the holder category on the day (details at the end), so holder prices lean on brand-direct stores.
The three formats
Open handle (including fixed-bow holders). A reusable handle or bow that you thread with ordinary floss from any standard spool. No proprietary refill exists, which is the whole point: the refill market is every drugstore floss aisle in the country.
Glass-jar holder with dedicated refill rolls. A refillable glass or steel container that dispenses floss like a conventional pick-up box, refilled with small rolls sold by the same or compatible eco-brands.
Proprietary dispenser. A branded dispenser refilled only with that brand's own cartridges or spools, sold through the brand's own store.
Ranking: refill running cost and refill availability
| Rank | Format | Confirmed refill cost per m (31 Aug 2026) | Floss cost per year at 167 m | Where refills are sold |
|---|---|---|---|---|
| 1 | Open handle / fixed bow | $0.0199–$0.1251 | $3.32–$20.89 | Walmart, Target, Walgreens, Amazon — any floss aisle |
| 2 | Glass jar + dedicated rolls | $0.1242–$0.1663 | $20.74–$27.77 | Brand webshops, some Amazon listings |
| — | Proprietary dispenser | not obtainable | not obtainable | The brand's own store only |
The proprietary format sits unranked rather than last. That is not politeness — we simply could not confirm a refill-only price for either example we checked, and a running-cost ranking built on a guess would be worse than a gap.
What the refills actually cost
The refill economy is where the formats separate. These are the confirmed spool and refill prices behind the ranking, cheapest first. Yearly figures are price per meter × 167 m.
Figure 1 — Yearly refill cost at 167 m, five confirmed routes
| Spool / refill | Retailer, 31 Aug 2026 | Price | Length in pack | Per meter | Per year (167 m) |
|---|---|---|---|---|---|
| Equate Mint Waxed Nylon Floss, 55 yd | Walmart.com | $1.00 | 50.3 m | $0.0199 | $3.32 |
| The Humble Co. Floss, 4 × 55 yd | Walmart.com | $9.35 | 201.2 m | $0.0465 | $7.77 |
| up&up Mint Floss, 2 × 54 yd | Target.com | $5.79 | 98.8 m | $0.0586 | $9.79 |
| Oral-B Satin Floss, 2-pack | Walgreens.com | $6.79 | 99.9 m | $0.0680 | $11.36 |
| Oral-B Glide Deep Clean, 3 × 40 m | Target.com | $9.99 | 120 m | $0.0833 | $13.91 |
| REACH Mint Waxed Floss, 55 yd | Walmart.com | $5.40 | 50.3 m | $0.1074 | $17.94 |
| The Good Floss silk floss + steel dispenser, 2 × 33 yd | thegoodfill.co | $7.50 | 60.4 m | $0.1242 | $20.74 |
| Oral-B Glide Deep Clean, 43.7 yd | Walgreens.com | $5.00 | 40 m | $0.1251 | $20.89 |
| TreeBird silk refill spools, 2 × 33 yd | Amazon.com | $9.99 | 60.4 m | $0.1655 | $27.64 |
| EcoRoots Zero Waste Floss, jar + 3 × 30 m | ecoroots.us | $14.97 | 90 m | $0.1663 | $27.77 |
| Cocofloss refillable spool, 33 yd | Walmart.com | $9.97 | 30.2 m | $0.3304 | $55.18 |
Three footnotes read out loud. The Humble Co. and REACH rows were on Walmart "Now" sale pricing on the day, and the Walgreens Oral-B Glide 43.7 yd showed an old price of $5.79 against the $5.00 we recorded — all three logged as the current public price. The Good Floss and EcoRoots per-meter figures are overstated as refill costs, because the $7.50 includes the steel dispenser and the $14.97 includes the glass jar itself — refill-only rolls would land lower, but we did not capture confirmed refill-only prices. And as a cross-check, the same Oral-B Glide 3-pack listed at $9.99 at Target was $9.97 at Amazon ($0.0831 per meter) — two retailers within two cents is about as stable as floss pricing gets.
The spread is the finding. Standard spools that fit any open handle run $0.0199 to $0.1251 per meter at mass retailers — a year of the cheapest confirmed spool costs $3.32. The dedicated eco-refill rolls that glass-jar systems take run $0.1242 to $0.1663 per meter (both confirmed prices include the container, so refill-only figures would land lower), so the same year costs $20.74 to $27.77. That is a 6× to 8× running-cost gap between the winning format's cheapest confirmed refill and the glass-jar format's range, before anyone has bought a holder.
Entry prices: what the holder itself costs
Holders are a one-time cost and are deliberately not in the running-cost ranking. Confirmed entry prices on the day:
| Format | Example | Store, 31 Aug 2026 | Entry price |
|---|---|---|---|
| Open handle | GUM Flossmate handle (handle alone) | sunstargum.com | $1.00 |
| Open handle (fixed bow) | LastFloss, incl. travel case + starter floss — pre-order, ships December 2026 | better-objects.com | $19.95 |
| Glass jar | The Good Floss steel dispenser + 2 silk spools | thegoodfill.co | $7.50 |
| Glass jar | EcoRoots jar + 3 × 30 m rolls | ecoroots.us | $14.97 |
| Proprietary | quip Pop-Up dispenser + 1 preloaded refill (~3 months) | getquip.com | $12.75 |
| Proprietary | Dental Lace stainless-steel flosser, no floss included | dentallace.com | $13.99 |
Two caveats on this table. The GUM Flossmate at $1.00 on Sunstar's own consumer site sits well below typical street pricing, so treat it as a floor, not a norm. And the LastFloss price is an early-bird pre-sale figure — 2-pack and 3-pack options price lower per unit — for a product that has not shipped.
What we could not price
This survey has real holes, so here they are.
No refill-only price for either proprietary system. quip's $12.75 is a dispenser bundled with one preloaded refill described as lasting about three months; the standalone refill price was not confirmed on the page we read. Dental Lace's $13.99 is the handle alone, and its refill spools were not in our confirmed rows. The proprietary format's running cost is therefore unknown to us, which is exactly why it is unranked.
Three rows failed confirmation and were dropped, prices and all. A Reach 2 × 200 yd refill spool and a TreeBird 5 × 33 yd refill pack, both on Amazon, loaded their prices dynamically, so the figures could not be confirmed verbatim in the page content — a pity, because bulk refill spools are precisely what would sharpen the per-meter picture. A Walgreens Reach 55 yd spool was excluded after the page returned an access error on re-check. None of the three prices is quoted here, because we could not stand behind them.
The holder category was largely unreadable at mass retailers. Target returned a dead product page for the one relevant holder kit we found, Walmart presented a bot-check wall, Amazon rendered pages without price fields, and Walgreens and CVS returned access errors — CVS being geo-blocked outside the US entirely. Holder pricing above therefore comes from brand-direct stores, which is a bias worth knowing: brand stores tend to show list price without retail promotions.
Where LastFloss fits
LastObject's own entry here is LastFloss, a fixed-bow holder in the open-handle format — the format that wins this ranking. That needs saying carefully: the format wins because any $1.00-to-$5.40 drugstore spool fits it, and that logic applies equally to a $1.00 GUM Flossmate handle and to a $19.95 LastFloss. The open arithmetic for LastFloss, using the cheapest confirmed spool: $19.95 once, plus 167 m × $0.0199 = $3.32 of floss a year — about $23.27 in year one and $3.32 a year after that. It is a pre-order shipping in December 2026, so that is a projection about a product not yet on shelves, priced at an early-bird figure. How long any holder actually lasts is a number nobody in this survey publishes, ours included.
Figure 2 — The open-handle format's newest entry
What would change this ranking
A confirmed refill-only price from quip or Dental Lace would let the proprietary format be ranked — and if those refills are cheap, it could land anywhere. Confirmed prices for the dropped Amazon refill rows would narrow the glass-jar range. And all of this is one day's list prices: two Walmart rows and one Walgreens row were on visible sale pricing, and floss promotions churn weekly. We re-run this survey quarterly and date-stamp every pass.
For how the braces-specific tools compare on the same open-arithmetic basis, see our 23 August survey of braces flossing tools ranked by yearly cost and plastic waste. The material question — silk, nylon or PLA on the spool itself — is covered separately in our filament comparison.
Disclosure: this article is published by LastObject, which sells reusable hygiene products and is taking pre-orders for a refillable floss holder in the open-handle format. The ranking is of formats, not products; the format LastFloss belongs to also contains a competing handle priced at $1.00, and we put that number in the table.
