It’s not a pleasant job, but the right cleaner makes it easier.
Harpic Fresh Power is a gel toilet cleaner that costs 4¢ per 10ml. It's poor at cleaning toilets.
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Overall score is determined solely by cleaning performance. We stain white tiles with a NASA formulation of simulated faeces. We then apply toilet cleaner to the tile and scrub it with a mechanical arm.
We measure the reflectance of the tile before we apply the stain and again after cleaning. Each product is tested three times, with the results averaged for a final score.
Benzalkonium Chloride 0.34% w/v
Performs worse than water.