Dave from Mesa, Az writes,
How safe is Cyonara on exterior vinyl siding - I live in the country and want to control spiders?
spider webs that collect on the house in the summer. Will it leave a residue that would stain the siding? This would be used in our 2nd home in Canada.
Cyonara is a water based product and should not stain any surface that water itself would not stain. Having said that we always recommend you test old siding or old paint for staining before spraying the entire surface.
Answer last updated on: 03/17/2013