Question about cleaning bird feeders safely

Pretty much every website I've read says to clean bird feeders with a "mild detergent" or "warm soapy water", with some being a bit more specific and saying that this can be a mixture of bleach and water, and then rinse thoroughly.
My question is, how mild is mild? What ratio of water to bleach is safe, both in terms of making sure any bugs are killed off and in making sure that there isn't residue left over after rinsing that might harm the birds. Also, what really counts as a bird-safe detergent - is bleach and water best, or will "normal" soapy water (i.e. bog standard Fairy Liquid that you use for your dishes) also do the job?
I try to clean my bird feeders regularly, but they get mucky again pretty quickly, so I want to make sure that I am not unintentionally building up any disease or toxicity problems for the birds in the long term.
Thank you.
My question is, how mild is mild? What ratio of water to bleach is safe, both in terms of making sure any bugs are killed off and in making sure that there isn't residue left over after rinsing that might harm the birds. Also, what really counts as a bird-safe detergent - is bleach and water best, or will "normal" soapy water (i.e. bog standard Fairy Liquid that you use for your dishes) also do the job?
I try to clean my bird feeders regularly, but they get mucky again pretty quickly, so I want to make sure that I am not unintentionally building up any disease or toxicity problems for the birds in the long term.
Thank you.
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"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
If you live in Derbyshire, as I do.
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
They also make a hutch and cage cleaner, which is good too.
If you live in Derbyshire, as I do.