Just-add-water cleaning tablets vs powder concentrates: which refill format wins?

Resparkle plant-fibre refill sachet alongside a fresh orange slice, showing the just-add-water refill format

TL;DR: Both formats work, and both solve the same core problem (the single-use plastic bottle). Tablets are convenient and dose-perfect; powder sachets give you a little more flexibility and skip the binder ingredients that hold a tablet together. For surface cleaners, the gap is small enough that either is a fair choice. For laundry, powder is currently the better-evidenced option: no tablet-based laundry product in Australia (that we're aware of) has published lab data matching what powder formats have shown against the major supermarket benchmarks.

By the Resparkle team, a small family business based in Brisbane. Last updated: 2026-06-03.

Why this question is suddenly everywhere

A lot of Australian households discovered "just add water" cleaning through Pleasant State, the Brisbane tablet brand that closed on 27 January 2026 after pioneering the format in Australia (and holding the country's only certified B Corp status in cleaning at the time of its closure). With that brand gone, the obvious next question is: what now?

The honest answer is that the choice splits two ways. You can stay in the tablet format with another brand, or you can step sideways into powder sachet refills, which solve the same problem with slightly different chemistry. This article walks both formats fairly so you can make the call that suits your house.

What "just add water" actually means

The traditional cleaning product is roughly 95% water and 5% active ingredients, shipped in a plastic bottle from a factory to a warehouse to a shop to your kitchen. "Just add water" removes the water from the supply chain. The cleaner ships dry (as a tablet, a sachet, or a powder bag), and you add tap water at home. Same chemistry in the finished bottle; far less transport carbon and packaging waste to get there.

That's the umbrella the two formats sit under. The differences are in how the cleaner is delivered to your house, and what's in it once you mix it up.

How tablets work

A cleaning tablet is a pressed disc of dry ingredients held together with a binder. You drop the tablet into a bottle of tap water, wait between roughly one and five minutes (depending on water temperature and tablet thickness), and the tablet dissolves into a finished cleaner.

The binder is the load-bearing piece. It's the ingredient that gives the tablet its shape and stops it crumbling in the box on the way to you. Common binders across the global tablet category include polyethylene glycol (PEG), polyvinyl alcohol (PVA), and starch-based binders. The specific binder varies by brand and by formulation, and it's the one ingredient that has to be in the tablet purely to make the tablet exist (it has nothing to do with cleaning).

In the Australian market, the tablet model was pioneered by Pleasant State (closed January 2026), with Cove also operating locally and US brand Blueland shipping in. Each brand makes its own binder choice.

How powder and sachet refills work

A powder sachet refill is a measured dose of concentrated cleaning powder, pre-portioned into a plant-fibre sachet. You tear or drop the sachet into a spray bottle (or, for laundry, straight into the machine), add water, shake or stir, and the powder dissolves.

The structural difference: the sachet is the container, so it carries the dose. The powder inside doesn't need to hold its own shape. That means no binder is required; the formulation is just the cleaning chemistry.

In Australia this is the format used by Resparkle's All Purpose Cleaner (one sachet plus 500ml of tap water in a reusable glass spray bottle) and Resparkle's Natural Laundry Powder (sachet poured into a refill bag, scooped per load), along with a range of bulk-powder refill brands.

Side-by-side: six things that actually differ

Criterion Tablets Powder sachets Bulk powder
Dose precision Perfect (pre-pressed) Perfect (pre-portioned) User-controlled
Binder ingredients Required (PEG / PVA / starch type, varies by brand) None None
Dissolution time 1 to 5 min (water temp dependent) Near-instant when stirred Near-instant when stirred
Shelf life Years if dry; binder can soften in humidity Excellent if stored dry Excellent if stored dry
Packaging Usually cardboard or paper sleeve Industrially compostable plant fibre Compostable bag or bulk paper
What's in your final cleaner Cleaning chemistry plus binder Just the cleaning chemistry Just the cleaning chemistry

A few of these deserve a sentence each.

Binder ingredients are the cleanest functional difference between the two formats. A tablet has to have one because something has to hold the tablet together; a sachet doesn't, because the sachet itself does that job. Most binders used in the cleaning tablet category are considered safe and biodegradable, but they're a non-cleaning ingredient in your finished bottle. If you're someone who tracks ingredient lists carefully, that's a real distinction.

Shelf life quietly favours sachets in Australian conditions. Dry powder in a sealed bag is stable for years. Tablets are too if the binder holds, but in humid environments (Brisbane summers, North Queensland, anywhere coastal) some binders can soften or crumble before you've used the pack.

Packaging is broadly a wash. Tablets are commonly shipped in cardboard or paper; sachets in industrially compostable plant fibre. Both can land plastic-free at the customer end.

Where each format wins

Tablets win on:

  • Maximum convenience. Drop the tablet in the bottle, walk away, come back to a finished cleaner. That ritual is genuinely satisfying and it's a real product strength, not a marketing line.
  • Travel and portable kits. A tablet in a wrapper survives a backpack or a glovebox in a way that loose powder doesn't.
  • The visual feedback of watching the cleaner make itself. Some households just enjoy that, and it makes the refill habit stickier.

Sachets and pre-portioned powder win on:

  • Flexibility. Use half a sachet for a half batch, or two sachets for a strong-clean job, without breaking the dose system.
  • Faster mixing. A stirred sachet dissolves in seconds; a tablet takes a few minutes.
  • No binder in your finished cleaner. The only ingredients in the bottle are the ones doing actual cleaning work.
  • Better shelf stability in humid Australian climates.

Bulk powder wins on:

  • Lowest packaging per wash and lowest cost per wash. The trade-off is that dose precision is up to you.

The category-level verdict for surface cleaners is genuinely close. Either format will give you a perfectly good plastic-free, just-add-water refill system. The deciding factor is usually personal: do you want maximum convenience (tablet), or do you want the cleanest possible ingredient list and a bit of flexibility (sachet)?

Laundry is the exception

Laughing toddler in a wooden crate with two Resparkle Natural Laundry Powder bags, the powder-sachet format in family use

There is one category where the two formats are not close, and that's laundry.

Powder dominates the published-performance side of the laundry category. Resparkle's Natural Laundry Powder has been independently lab tested to outperform CHOICE's #1-rated supermarket detergent on five common stains. That's a clear, named benchmark with public reference points.

We're not aware of any tablet-based laundry product currently sold in Australia with comparable published lab data against a named supermarket benchmark. That's a deliberately careful sentence: we're not claiming the data doesn't exist anywhere, and we're not saying tablet-based laundry products can't clean. We're saying that on the published-evidence question, powder is currently the format with the receipts.

Part of the reason sits in the chemistry. A laundry load needs a substantial dose of surfactants, oxygen bleach, and enzymes to handle real stains, and powder formats fit more of that per gram than thin pressed tablets typically allow. The same constraint that pulled laundry sheets to the bottom of CHOICE's most recent detergent test (see Powder vs sheets vs liquid) applies, in a milder form, to the tablet format too.

If you're picking a refill format for laundry specifically, powder is the better-evidenced answer.

Where Resparkle landed and why

We thought about both formats hard when we built the range, and we landed on sachet-into-bottle for surface cleaners and powder-bag for laundry. The reasoning:

For the All Purpose Cleaner Kit ($32 for a 500ml reusable glass spray bottle plus two plant-fibre refill sachets; one sachet makes 500ml of finished cleaner; every ingredient EWG 1), the sachet format gives you the same just-add-water experience as a tablet, without any binder in the finished bottle. The sachet itself is industrially compostable plant fibre. We thought the cleaner ingredient list was worth the slight trade-off in dramatic dissolution.

For the Natural Laundry Powder ($18 for 600g, 55 washes, 4-in-1 wash and sanitise and stain and odour remover, plastic-free industrially compostable bag, every ingredient EWG 1 or 2, 2020 Australian Non-Toxic Awards Gold + Editor's Choice), powder lets us hit a dose density per load that lab-tests against the leading supermarket detergent. The flexibility (scoop more for a heavy load, less for a small one) matters here too.

Different categories pulled us to different format calls. We'd encourage you to do the same.

What this means if you're coming off Pleasant State

If you're a Pleasant State customer reading this in the wake of the closure, the most valuable thing you carry forward is your existing glass spray bottle. Both tablets and sachets fit it. Your refill habit is intact; the question is just which dry format slots into the bottle.

The trade-off is real but small. A tablet brand gives you the closest experience to what you had with Pleasant State, with the convenience of the same drop-and-walk-away ritual. A sachet brand gives you a slightly cleaner ingredient list and (in our experience) better humidity tolerance for Australian conditions.

There's no wrong answer here. Pick the trade-off you care about most.

Related reading

Sources

By the Resparkle team, a small family business based in Brisbane. Last updated: 2026-06-03.

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