I've used borneo too on vfts and it was really goog. I also sprayed the sundews just for precaution without burning sign. And yes its specific against eggs and juvenile form.
Do you think SDS could be related to one of these?:
phytophtora
pythium
Some grower here in Italy use trichoderma with good result. I'm asking more than anything else because i've never been very lucky with thi genus.
Hi Oliver, plants always need of sunlight and good air circulation even in winter time. Specially if they still have green parts (for photosyntesis) and to avoid mould.