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.
Ambilobe, Ambanja, morph, t.johnstoni, jacksonii.jacksonii, Hoehnelii, Parsonii, MD Gecko