Don't know about spiders, but as for grasshoppers, crickets and locusts, gently swat with clothes to kill, remove anteannae, wings and leg spurs. Roasting is th

Don't know about spiders, but as for grasshoppers, crickets and locusts, gently swat with clothes to kill, remove anteannae, wings and leg spurs. Roasting is the best as it kills potential parasites and they taste best that way (as well as helping to easier powderize all that chitin).