Thick cling formula
Built to hold onto vertical grout lines and overhead surfaces instead of running down the wall.
7 oz (207 ml) per bottle · grout, silicone seals and tile
- No-scrub cling gel
- Grout & silicone safe
- 30-day guarantee
Klenzo No-Scrub Mould Gel
A thick gel that clings to vertical and overhead surfaces instead of running off, so it stays on black mould and mildew stains long enough to work.
- Thick cling formula stays put on grout lines, shower silicone and tile, not just flat counters
- Apply directly to the stain and let it sit; most household mould and mildew stains lift without scrubbing
- Each order ships as 1 kit, 7 oz (207 ml) per bottle
30-day guaranteeFree tracked shippingNo-scrub formula
The grout and seal problem
Sprays run off before mould has time to lift
Thin sprays and wipes slide down vertical grout lines, shower silicone and washing machine gaskets before they can work on the stain underneath. Klenzo is a thick gel built to stay exactly where you put it.
Clings on contactThe gel holds to vertical and overhead surfaces instead of dripping away.
No scrub brushApply, let it sit, then wipe or rinse for most household mould and mildew stains.
Multi-surfaceBuilt for grout, silicone seals, tile and rubber door gaskets.
How it works
Three steps, no scrubbing required
- 1Apply a line of gel directly onto the stained grout, seal or tile
- 2Let it sit undisturbed so the gel can work into the stain
- 3Wipe or rinse away; repeat on stubborn spots
- 4Keep the second bottle on hand for touch ups between deep cleans
Kit sizes
Pick enough gel for every mould-prone room
Need1 Kit2 Kits3 Kits
Best forTrying it on one shower or one gasketFull bathroom plus a laundry gasketMultiple bathrooms or a whole-home refresh
Bottles2 × 7 oz4 × 7 oz6 × 7 oz
Value$34.95 $59.95 $79.95
Laundry gaskets included
Use it on the rubber door seal of a front-load washer, not just bathroom grout.
Precision nozzle
The narrow tip lays gel exactly along a grout line or seal without wide overspray.
Why choose Klenzo
Built for stains a spray can't reach
FeatureKlenzoTypical spray
TextureThick cling gelThin liquid, runs off
Vertical surfacesStays on grout & sealsDrips away fast
EffortApply, wait, wipeUsually needs scrubbing
Questions before you choose
Mould and grout gel basics
What surfaces is it safe for?
Klenzo is formulated for grout, silicone seals, tile and rubber gaskets such as a washing machine door seal. Spot test on an inconspicuous area first on colored or unsealed surfaces.
Do I need to scrub?
No. Apply the gel to the stain, let it sit undisturbed, then wipe or rinse. Most household mould and mildew stains lift without a scrub brush; heavier buildup may need a second application.
How much gel is in each kit?
Each bottle holds 7 oz (207 ml). The 2-bottle kit covers a full shower enclosure or a washing machine gasket with gel left over for touch ups; larger kits scale up for multiple rooms.
When will my order arrive?
The current CAAYWORLD shipping policy estimates 5 to 15 business days total, including 1 to 3 business days processing and 4 to 12 business days in transit. Delivery dates remain estimates and can vary with customs and local courier conditions.
What if it does not work on my stain?
Contact us within 30 days of delivery. If Klenzo does not help lift mould or mildew stains from your grout, seals or tile, we will make it right.
At a glance
GroutSilicone sealsTileGasketsNo-scrubCling gel
Support after your order
Clear promises from cart to doorstep
Estimated delivery is 5 to 15 business days total. Follow every Klenzo order from dispatch to delivery.
Track your orderTry it on your toughest grout line or seal, risk free.
Read the return policyQuestions about surfaces, coverage or your order? Our team can help.
Contact usTry it on your worst stain
30-day mould and mildew stain guarantee
Use Klenzo on your grout, seals or tile. If it does not help lift the stain, contact us within 30 days for help or a refund.
Verified buyer photos
Real customers,
real results
4.8 out of 5 from verified buyers
I doubted it, but one application lightened the black shower grout without any scrubbing.
Bought this for my mom because she is always complaining about the seal around her shower door going black. Gave it to her with a little note. She called me two days later just to say the gasket around her washing machine door came clean too, not just the shower. Great gift for anyone who hates cleaning.
The grout behind my kitchen sink had gone nearly black. One application of Klenzo brought it close to its original grey without scrubbing.
The rubber seal on my front load washer had that mildew smell no matter how many wipe downs I did. Ran a bead of this gel around the whole gasket before bed, wiped it out in the morning and the smell is finally gone, not just covered up. Texture is thick so it actually stays on the rubber instead of dripping into the drum.
Finally, a mould gel that stays on the window seal instead of running off.
I set the bottle on the tub ledge with a sponge and towel before tackling the grout. The thick gel stayed where I put it and wiped away clean.
The box arrived in five days with the bottle sealed and the nozzle intact. I opened it on the kitchen table and used it that evening.
I keep one bottle in the laundry room for the washer gasket. The gel clings to the vertical rubber seal, so I can apply it before bed and wipe it in the morning.