There are many kinds of red spiders in the world, most of which are non-toxic, and some of them are phytophagous, mainly eating the leaves of plants for a living. The most common red spider in the world is the cotton red spider, which mainly feeds on the juice of plant leaves, which will cause the leaves to wither or even fall off. This spider is non-toxic, so it is enough to spray and kill it in time.
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Precautions:
Clean up regularly and remove the sundries in the room. Spiders need to have a fixed point when weaving a web, so it is very difficult for spiders to weave a web after cleaning up all the debris.
Most spiders like to hide in the dark, so when cleaning, we must pay attention to some boxes, the back of cabinets, cracks in walls and other places. Keep these places clean, and naturally there will be fewer spiders.
The biggest reason for spiders to weave webs is predation. Flies, mosquitoes, etc. are all delicacies of spiders. When there are many insects in a place, natural spiders will gather in these places. So the most fundamental way to clean up spiders is to kill all insects.
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