Buy a thin net fabric called tulle at any fabric store - it's very cheap. It is a netting with very small holes. Cover your plants with it - it lets in light, water but not the beetles. I use it on all my potted flowers that they are attracted to. Have to keep it on for about 6 weeks until they are gone but it works & doesn't poison bees, butterflies etc.
Buy a thin net fabric called tulle at any fabric store - it's very cheap. It is a netting with very small holes. Cover your plants with it - it lets in light, water but not the beetles. I use it on all my potted flowers that they are attracted to. Have to keep it on for about 6 weeks until they are gone but it works & doesn't poison bees, butterflies etc.