right, first off i wanted to say that i am sorry for not having caught this thread earlier. we try to keep up on quite a few forums everyday (all over the world) and sometimes things slip by. but, finally read through now.
so, the issue: yes there has been a lasting issue with the spray heads on the Red Mist Tropical. one which, as Meghan so rightly pointed out, we have tried to solve with new triggers at least 3 times. each time gaining promises from the manufacturers of the sprayheads that they were completely chemical resistant. however, they have not managed to deal with the protective goodness of the Red Mist. we do now have a grey 'chemical resistant' spray head that works much better. [note: it does come down to storage temp, usage, emptying the spray head when done so the head doesn't clog. these are a bit much to ask of the customer (which is why we have searched and sourced new heads) but will let the sprayer last longer. as stated earlier we have more than a couple of the clear spray heads still going strong, but they need the extra attention.]
the fix: if there is an issue with any Dodo Juice product it is always possible to write us an email from the website. (i would say that we are great at customer support too, but i think we might be out-supported by Autogeek reading this thread so far and knowing the people there myself - so the Dodo will take second place on this one 8) ). Dom and i will almost always reply within an unreasonably short period and completely surprise you.
as for the spray heads, if you send an email to thedodo at dodojuice dot com and give me your address i will ship out a new Let us Spray 500ml and chemical resistant spray head for you to use. since you feel that you have been ignored in this issue i will send you a Sour Power 250ml in addition for a promise that you will exhaust more energy in resolving an issue before you post it as an 'ignored or forgotten customer support item'.
i hope this lays the issue and therefore the thread to rest and we can all go back to our pride and joy and make it shinier 8)