It’s a plastic unit, made of two parts: blue and clear. What is it for?

What Is It Called?
This product is commonly described as a toilet bowl cleaning gel or toilet cleaning gel stamp, and the text you provided references “Toilet Cleaning Gel – Scrubbing Bubbles Peroxy Hydro.”
In your photos, it appears as a handheld plastic applicator that dispenses a measured amount of gel into the toilet bowl.
What You’re Seeing in the Images
The device consists of:
- A blue outer tube (the handle/body)
- A clear inner section (where the gel cartridge or gel reservoir area sits)
- A flat base/lip that helps position the applicator against the bowl
- A dose/step indicator panel (the raised circular marks suggest controlled “clicks” or portions)
This design is typical of “stamp-style” toilet gels: you press and dispense a gel “stamp” onto the inside wall of the bowl.
When Did This Type of Product First Appear?
Rather than being a decades-old tool, gel stamp toilet cleaners are a modern cleaning format. They became widely popular in the 2000s and grew further in the 2010s, as brands introduced alternatives to:
- Drop-in tank tablets (which can be harsh on internal tank parts)
- Hanging rim blocks (which can fall off and create plastic waste)
So, the format (gel stamp applicator cleaners) is generally associated with the early 21st century rather than earlier household-cleaning eras.
What Is It Used For? (Main Purpose)
To keep the toilet bowl cleaner and fresher between deep cleanings by applying a gel dose that slowly dissolves over multiple flushes.
Key functions include:
- Helps reduce ring buildup by adding cleaning agents during each flush
- Provides ongoing deodorizing/freshness
- Targets the bowl surface (not the tank), where stains and residue form
How It Works (Simple Step-by-Step)
- Position the applicator tip against the inside wall of the toilet bowl (above the waterline).
- Press/dispense one measured dose so a gel “stamp” sticks to the porcelain.
- Flush: each flush releases a small amount of the gel into the water flow.
- Replace/reapply once the stamp dissolves (timing depends on flush frequency).
What “Peroxy Hydro” Typically Implies
“Peroxy” usually signals a peroxide-based cleaning approach (oxygen-style cleaning), which is often used to:
- Support stain-lifting and whitening action
- Provide a cleaner scent profile compared with heavier chlorine-type smells (varies by formula)
Where It Fits in Toilet Cleaning (Best Use Case)
- Best for:
- Maintenance cleaning (daily/weekly freshness support)
- Homes that want a set-and-forget supplement between scrubs
- Not a replacement for:
- Manual scrubbing for heavy limescale, rust, or hard-water deposits
Practical Tips (Important)
- Apply the gel above the waterline for better adhesion and longer life.
- Don’t stack too many stamps at once; one dose at a time is usually the intended use.
- Keep away from small children and pets; store it high and closed.
