Zero had to say, the one thing unbearable about this strategy was the feeling of hairy legs crawling all over him. Zero didn't absorb all the spiders in one go. He did it slowly so that the spiders wouldn't notice that their siblings were disappearing as he 'struggled' in their captivity. The webs that they produced to wrap him in were also slowly absorbed into his void inventory.
All in all, Zero was enjoying the experience with the exception of crawling legs all over him. If one spot got too ticklish, Zero would simply make the spider disappear into his inventory. While the spider did their task and Wii did her job, Zero tasked Mii to expand the search of the dungeon and level up the appraisal skill.