Seaways Multi-Purpose Descaler | 20-Use Citric Acid Packets — Kettle, Coffee Machine & Ice Maker

Nine and up: drip coffee makers, single-serve pod machines (Keurig, Nespresso and similar), espresso machines, electric kettles, countertop and built-in ice makers, water distillers, humidifiers, tumblers and travel mugs, and shower heads.

If your appliance holds water and heats or freezes it, it builds limescale and this will remove it. Always follow your appliance manufacturer's descaling instructions for cycle timing and volumes.

One packet per cleaning. Dissolve it in warm water (not boiling), run it through the appliance or let it sit, and give it 20 to 30 minutes to work.

For heavy buildup, appliances that have never been descaled or hard-water households, use two packets in the same cycle, or run the cycle twice.

Yes, rinse. Run two to three cycles of clean water after descaling, and discard the first batch of ice or the first pot of coffee.

Citric acid has no odor and does not leave the sour smell that vinegar does. If you still taste anything after three rinse cycles, run one more. It means some solution is sitting in a line or reservoir the first cycles did not reach.

This is a descaler, not a sanitizer or a degreaser.

It removes limescale, mineral deposits and hard-water buildup completely. It does not reliably remove coffee oils and brown staining. Those are organic residue, not mineral, and need a coffee-machine cleaner or a soak in dish soap. It also does not kill mold, pink slime or biofilm. If you see visible mold or slime in an ice maker or reservoir, clean it first with a sanitizing solution rated for food-contact surfaces, then descale.

That light is a counter, not a sensor. Most machines track brew cycles or water volume and turn the light on at a set number. It does not detect whether scale is actually gone, so it will stay on until the machine's own descale program runs to completion.

Two things to check. First, run the full descale cycle from start to finish using your machine's descale mode. Stopping early, or just pouring solution through a normal brew, usually will not clear it. Second, look up the reset combination in your manual. Many models need a button hold after the cycle finishes. If the light persists after a completed cycle plus a reset, the issue is with the machine's sensor or firmware, not with descaling.

Yes, and a self-clean button is not required.

If your ice maker has a clean cycle, use it. If it does not, dissolve one packet in the water reservoir, let it stand 20 to 30 minutes, drain, then run two to three cycles of clean water and discard that ice. This works on countertop nugget and bullet ice makers, built-in units and portable models.

The formula is nickel-safe, so it will not attack the nickel-plated evaporator plates used in most ice machines.

Vinegar works on light scale, and it is cheaper. Three practical differences.

Vinegar leaves a smell and a sour taste that takes several extra rinse cycles to clear. Household vinegar is roughly 5% acetic acid, which is weak against heavy buildup, and that is why people end up running it three or four times. And vinegar is not pre-measured, so the concentration changes every time you use it. Each packet here is measured for one cleaning, so you get the same result every cycle without mixing anything.

The active ingredient is food-grade citric acid, the same compound that occurs naturally in lemons and is widely used in food and beverage production. It is unscented and contains no chlorine and no phosphates.

Food-grade describes the ingredient, not the product's intended use. This is a cleaning product: do not drink the solution, and keep packets out of reach of children and pets. Rinse the appliance as described above before your next use.

It is safe for septic systems and standard municipal drains. Citric acid breaks down and will not disrupt a septic tank at household cleaning volumes.

No. It is safe on stainless steel, aluminum, plastic, glass, chrome, silicone, and rubber gaskets and seals at the recommended strength and soak time.

Two things to keep to: use warm water, never boiling, and do not extend the soak far past 30 minutes on bare, unfinished aluminum. Rinse and dry as you normally would after cleaning.

Each box contains 20 individually sealed packets, so 20 cleanings. Sealed packets keep for two years. Store them dry and at room temperature.

We back it with a 60-day guarantee. If it is not right for you, tell us how many packets you have not opened within 60 days and we will refund those — in most cases you won't need to ship anything back. Opened packets cannot be refunded. If a packet arrives torn or damaged, contact us with a photo and we will replace the box.