Ceaning stains on plastic cups

[RegandPat]

I own a Swift van and with the van came 4 cups, now the van is getting on in years about 12 now but the cups are discolored with tea stains in side, I would like to keep the cups but would like also to have them sparkling white.
I have tried bleach and it did nothing, any sugestions.
Reg

 

[Lutz]

Have you tried denture cleaning tablets?

 

[RegandPat]

I'll give the denture tablets a go, and can clean my teeth at the same time.

 

[Chris_Hyde_Cheshire.]

You can also try "Milton" sterilising fluid, worked ok for me last time but if I remember correctly took a couple of days for the smell to go.....

Chris - Hyde - Cheshire.

 

[Mel]

I'd go with the steradent, but staying on the teeth theme, you could give the cups a toothbrushing with toothpaste as it is mildly abrasive. A soak in biological washing powder might also work, but lots of rinsing.
mel

 

[Soozeeg]

I use sterilising tablets, like Milton but in tablet form, any supermarket/chemist brand. I drop two tablets in the washing up bowl and fill it with water, then soak stained cups (and the dishcloth/washing up brush) in there for a couple of hours. Rinse well afterwards. May take another go if the cups are heavily stained, or you could try putting quarter or half a tablet in each cup and filling it with water.

 

[forestgump]

i found if you use bleach it removes a layer off coating and thay get dirty more offten and is a pain to remove.