I'm guessing that the white spots are mealy bugs; might be aphids or scales. Garrett Juice is great for your plants but will not get rid of the bugs unless you add something to it to kill bugs. I would use NEEM. See the links below for more info.
http://www.dirtdoctor.com/forum/viewtopic.php?t=1674&highlight=aphids+mealybugs
http://www.dirtdoctor.com/radio.php?id=286
http://www.dirtdoctor.com/forum/viewtopic.php?t=1823&highlight=orange+oil
You can buy Garrett Juice and most any of the products mentioned on this site at feed or garden stores. Rohde's should have everything you need & will have good advice also. Take a leaf with the bugs on it and they will ID it for you. All lizards we have in this area are beneficial. I can't ID it for you. Maybe someone else can help.
Ck the
http://www.dirtdoctor.com/home.php website & these discussion forums for all the info you need.