There are no temperature restrictions when applying Bio Advanced 3-in-1 Insect Disease & Mite Control RTS. We would not recommend applying during the highest temperatures of the day.
If a citrus tree was sprayed with Bio Advanced 3-in-1 Insect Disease & Mite Control RTS we would advise of disposing of any fruit on the tree & not consuming fruits from this tree for one growing season. The product should not harm the tree, but you may consider consulting further with Bio Advance on this matter as it is not labeled for edibles/citrus trees. They can be reached at (877) 229-3724