Its nice that you turn on the light for the dogs - really it is, but it is not always needed - unless it is a pitch black night and you know that they will never find home without a guiding light. Dogs can see better at night than humans. Oh sure dogs appear to be blind to the things we want them to notice... but they can see better than us most times. So you may want to try "no light" for the dogs. If you are good at wiring you may want to consider moving the light away from the door drawing the bugs further from the door - then you can leave it on to let the dogs in, the bugs will be flying around the bright light as the dogs come in, turn it off after the dogs are in and the bugs will go about their business. The so called "bug light" a yellow light bulb does reduce the number of bugs that are attracted, but bugs are still attracted and if you leave the light on you will get guests. Using a UV light in an electrified cage will catch and kill a lot of bugs - however once the porch light comes on bugs will be attracted to the light - so you will be killing lots of bugs and still have unwanted guests. Ultimately what I ended up doing (I too live in a rural area) was I used cord light or a string light - most often used around X-mas time - a plastic sheathed string of lights which are easy to wipe clean of debris. Using a screw in plug converter at the light fixture I ran the string light to the middle of the porch where it runs down the center of the porch as far from the door as possible. It still collects bugs, but the opening and closing of the door does not result in a flying swarm of insects entering the house. The only time we get pests like that is if I leave the door or screen door open for a longer period of time.

I think there are light bulbs out there that don't atttract bugs.

Get a bug light. It a light with electric wires that zap the bugs when they come to the light.

I don't have an answer to this question but wanted to say it sure is a coincidence! I just let my dog out for the night, and I too turn on the porch light...I usually leave the door cracked as well because she will not scratch or make any noise to get in and I have to either go out and get her or just leave the door open for her to get back in. But, I have the same problem with the gnats and moths...if you find something that works let me know! I'm in the exact same boat as you! +2 :)

Turn the light off - dogs can see in the dark.

There are lights that repel or do not attract insects. Usually they are yellow in color.

How about some sort of Citronella oil spray?

The light you are keeping "ON" actually attracts the bugs. Now, before you open the door, you are switching off the light. This scatters the bugs and they are dis-oriented. When you open the door, the "inside" light / illumination attract the bugs and the bugs enter your house. Solution : Already suggested by others is good. And "DO NOT" switch off the porch light if you want to open the door. Rather switch off the inside light before opening the door. This will help.