DIY beetle spray for azaleas/rhodys
My low growing azalea is under attack by something. Many leaves are chewed and/or skeletonized and leaves are slightly yellowish with a bit of brown - but not the leaf ends. Garden books suggest beetle as the chewing culprit. I read of a DIY spray for beetles using 1T of isopropyl alcohol and pyrethrum (forgot the ratio). Has anyone heard of or used this? I've also seen a product with pyrethrum and canola oil base. Any recommendations please or would photo be best to get started? Thank you.