Tomato - Blossom drop!

Oh well, my 2 tomato plants are suffering from blossom drop! :-( I googled last night and there are several reasons for that, of which, one of them is extreme temperature (can't be too hot or too cold). I think maybe the daytime is too hot for them, that's why they drop their flowers! Sigh.... Maybe I gotta move them to under the shade in the afternoon? But I dared not move the box as they are millipeds breeding in the box!! Yucks! So many of them, even though I have already killed so many of them!