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Suction sampling is a common field technique for sampling invertebrates, including spiders - see https://www.bug-net.org/invertebrate-sampling-protocol/. So, if you don't want to use the classic paper and pint glass method, some form of vacuuming is probably fine.
Question for the group. I need to re-paint my garage, which has quite a few spiders in it. Some small ones, but also some tube-webs and a couple of large house spiders. I need to paint where they live, so can't leave them be.
How do I move them without either killing them or touching them? Hoover seems first option, but not sure how much damage it will do.