Mr Muscle Drain Unblocker Liquid (2 x 500ml), Sink & Drain Cleaner, Strong & Fast Acting Heavy Duty Drain Gel, Dissolves Clog

Overview

We keep Mr Muscle Drain Unblocker Liquid (2 x 500ml), Sink on our cleaning supplies shelf alongside 38 others, and rank it on rating, review volume and live price rather than on the brand. The manufacturer puts it this way: 500ml Twin Pack provides up to 2 doses, with each dose typically using 500ml for effective drain unblocking. Sink power unblocker to destroy the toughest clogs in your drain. That is the maker talking, not us, so read it as a claim rather than a finding. Buyers have it at 4.5 out of 5 from 30,175 ratings. We work out below what that is worth against everything else on the shelf.

Shelf price range checked 26 Sept 2026, 15:37 BST · details

How it compares on the cleaning supplies shelf

The typical cleaning supplies product on our shelf scores 4.6 out of 5, measured across 39 rated products. This one comes in at 4.5. That's inside the bottom quarter of the shelf. It isn't a warning, but better-rated options do sit alongside it at similar money, so you would want a specific reason to pick this one.

Behind that score sit 30,175 ratings, against a shelf median of 3,841. With that many opinions behind it the score won't move much, and it is difficult to manipulate. That is exactly why volume carries weight in our ranking.

The shelf runs from £1.00 to £41.99 and the midpoint is about £4.15. On price, this one is in the middle third. Which is where most sensible buys end up: not the cheapest on the shelf, and not the one you pay a name for.

Shelf prices checked 26 Sept 2026, 15:37 BST · details

Worked out from the 39 cleaning supplies products we track, not from the brand's own claims. How we rank →

Key features, as the manufacturer lists them

Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.

• 500ml Twin Pack provides up to 2 doses, with each dose typically using 500ml for effective drain unblocking
• Sink power unblocker to destroy the toughest clogs in your drain
• Blocked drain cleaner for dissolving clogs caused by debris in sinks, plugholes and pipes
• 3x more effective than bleach as a pipe unblocker based on hair removal in laboratory testing
• Cuts through standing water to unblock plugholes
• Mr Muscle drain unblocker is safe for use on all types of pipes

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