In a poll of 16 to 64-year-olds, the charity discovered a whopping 78 getting a daily wipe-over. Meanwhile the Scots came top of the clean toilet list, with 27% claiming they get out the toilet brush every day.
But look away now if you're of a particularly nervous disposition. Only one in ten Welsh people clean their loo just once a month. Oh dear.
Not just that, but an increasing number of people take their phones in the bathroom with them these days, the survey suggests. A quarter of us are chatting, texting, emailing or tweeting on the loo, with twice as many English people updating their Facebook status while they're on the loo as the Scots or Welsh.
So why is it important to keep your loo squeaky clean? As you'd expect, there are a lot of bugs in the average loo (though public toilets are far more germ-ridden than household ones). Some of the bacteria you might find in the bowl include salmonella, staphylococcus, e.coli and shigellosis - and yes, they are as bad as they sound.
However a quick brush and wipe with detergent once a day will help keep bacteria nasties at bay.
Do the results of this survey make you feel nauseated? How clean is your loo?