There are options for hissers, all have their positives and negatives. I've come to the realization that hissers are best hand feed.
Vaseline works as a barrier. also, a good dusting causes them to loose traction for an hour or so.
2.3 Ambilobe, 1.1 Nosy Be, 1.1 Ambanja, 1.0 morph, 1.1 t.johnstoni, 2.1 Parsonii, 1.1 MGD Gecko