Q.croton and bougainvillea plants
Both plants were brought in from outside recently. Now both have small spider webs and tiny black spots on the leaves. How do I get rid of the insects?

It's always a good idea to wash the leaves of plants when they are brought in from outdoors to indoors.
A treatment of Neem Oil will take care of most insects or fungus issues.
Neem Oil is safe for people and pets.
Here is a link with more information.
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm
https://www.gardeningknowhow.com/houseplants/hpgen/acclimate-plants-indoors-winter.htm