I see a few things that look like bug effects to me. Outdoor plants being kept inside may often get mites for instance. Get a magnifier and inspect the plants for tiny guests.

I'd get rid of all debris, ie egg shells and dead leaves, from the surface and get the plants outdoors. As well as the possible bug and fungal issues the plant is pale and etiolated indicating lack of light.

I had a small white flies a few months ago and used baby bronners soap and need oil. It worked really well the plants have been huge and beautiful until a week or so ago they started to look sad. After some extra reading I'm wondering if it is fungus flies. I know i have flies for sure, after looking really close at the plants it looks like small white flies. Any recommendations on insecticide?

Growing out side is not an option, small apartment & cold climate. I don't think light is the issue, it is a south facing large bay window and they have grown wonderfully (minus june and current issues). Pictures were take after some trimming, didn't think of posting till half way through leave. I first had issues in June and I sprayed the mix mention above. The plants have been growing like weeds until last week. Hoping my mix works well but looking into other alternatives.

got rid of the mint plant in the picture above but now two more are getting the small black dots and drying out. it looks like small bugs. not the best pictures it was a really bright day. both plants are growing fine they're bottom leaves are getting black spots and then drying out.

Anyone have a indoor pest solution they use?

Bottom line is I'm afraid they are not actually 'growing fine.' The new plants are already looking light starved. All the time they're not getting sufficient light, air movement, correct moisture and suitable temperatures they will be weak and pest prone. The pests are just a symptom of poor growing conditions and those need to be fixed or you'll always have trouble.

If you can give them enough light you can get around the other problems by keeping them cool, rinsing the foliage regularly under the tap or in the shower and constantly brushing across the plants. You need to simulate the cool, temperate, wet and breezy climates mints hail from.

Wet from being rinsed in the shower. This one I have to cut weekly because it grows like a weed so count that as "growing fine" (also why its an awkward shape). this one is leggy and the leaves are smaller than they are in the summer but don't think it would be growing this much if the light situation was that bad. I appreciate your info, my apartment is 80 degrees and we can not control the heat so I'll move them to a window I can open to give them a cool wet breeze. I will also be more vigilant with my plant light. Still interested in a good insecticide to give this one a jump start and for future if I have issues with any other plants.

Is that plant growing in a tin can? Are there drainage holes? If not there need to be. Outdoor mint grows at least a foot high so yours is by no means growing too tall. It shouldn't be necessary to cut it back weekly. The long distance between the leaf nodes in the pictures is the clue which shows it needs more light, not the height.

I'm afraid I can't recommend an insecticide as I've never used one, inside or out. Rinsing and gently sloshing affected foliage with your fingers should deal with anything other than scale. And you don't have scale.