The main purpose of thymolated syrup is to prevent bacterial /fungal
contamination of the syrup whilst it is being stored or taken down by the
bees.

I would very much doubt if the  concentration is strong enough to have a
therapeutic effect.

Fumagillin works on preventing the spores in the bee's gut from
'germinating', the bees can be re-infected from spores left inside the
colony.

You need to change all the brood frames, and then disinfect the old ones by
fumigation with 80% acetic acid. It is probably too late to that now that
fall is approaching so dose with fumagillin in the syrup now. If you do use
fumagillin do not add thymol to the syrup or you will affect the fumagillin.

Do a 'Bailey Frame change' in the spring as the colony is building up.
Disinfect any surplus brood frames with drawn comb with acetic acid now so
that they are ready for the frame change.

Ruary

-----Original Message-----
Rebecca Zens asked

How well does thymolated syrup work for nosema?

we've also tried fumagilin, but now we seem to be at an impasse.

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