What can I spray on patio plants to kill bugs before bringing them in.

You must re-pot in fresh soil then spray them down with horticultural oil

Hi Carol, Here's a link that may help! http://getbusygardening.com/debugging-and-cleaning-potted-plants/

Good luck!

Spray them down with a little dish liquid mixed with water.

While still outside, take a few moth balls and place them on top of the soil. Cover with a paper bag for 24 hours. You will have driven any bugs out.

This is what google said. Hope it helps.

Easy Steps for Debugging and Cleaning Potted Plants

1. Fill a large tub/bucket with water and add a few squirts of a mild liquid soap (I use Dr. Bronner's Baby Mild organic soap).

To kill bugs on the plant soak the whole plant, pot and all, in the tub of water for about 15-20 minutes.

Mix dawn and water in a spray bottle and spray on leaves.

neem oil