I have often used dried stuff such as split-peas and/or rice to act as a mild abrasive in places that I can't reach with my hands or a brush.
Swilling a handful of dried pulses/rice and a litre of water around (with as much energy as can be mustered) should knock off any spots of mould. After which I suggest that you:
o Empty out the pulses/rice and rinse the inside with plenty of water.
o Fill it to the brim with a strong solution of Tesco Thin Bleach (it's not scented) and leave it for 24 hours.
o Empty out the bleach solution, rinse three times with cold water, re-fill it and leave it for a second 24 hours.
By that time it will either be clean and smell free OR it will be time to go out and buy another one! :whistle:
PS
If there is enough of a gap to recover it, a small stainless steel scrubber can be used instead of the pulses/rice. Although not normally recommended, because it can scratch plastic surfaces, just swilling the scrubber around with some water shouldn't result in any scratches deep enough to hold bacteria. :thumb:
