First of all, I don't have a stash of cigarettes. :P Second, my previous apartment was infested with Indian moth so I actually bought a lot of air tight OXO containers for all my dried food since then. Plus I freeze every dry stuff from grocery store in the freezer for a week before storage. In addition, I don't see these bugs very often. Maybe one or two per two weeks during spring-summer months. Moreover, I found it between the window screen and window (and I don't ever open that window, and the screen is located outside. I took the picture inside my apartment with the window pane in between my camera and the window screen). Hence I believe it's coming from my neighbors. I don't know what I can do in this case. They could be coming from cracks and nooks.

Louise Soil could be wet deep inside, even if top is dry. it all depends on what it consists of. Best way to find out is to use bamboo or other wood skewer or chopstick, that will reach deep down into pt. Extra water accumulates there, and it could keep your soil mix wet. It is impossible to guess what the bugs are without photo and sometimes even with photo :) I understand that it is very difficult to photo very small bugs. Could be springtails (they come in many different sizes, colors and shapes), soil mites, root aphids...and many. many more. It is possible for bagged soil to be infected, but bugs still need certain conditions they like to thrive and multiply. More organics in your mix and more water + higher temps and/or humidity, better environments there is for many bugs. Common advice is not to use things like worm castings in potting mix. They are great for gardens, not so much in containers. (from wiki): Springtails commonly consume fungal hyphae and spores, but also have been found to consume plant material and pollen, animal remains, colloidal materials, minerals and bacteria. ETA: I just looked up Ecothrive Charge. It is beetle poop - so you are adding more poop to your pots, together with worm poop. ..."Laboratory tests have shown that Charge consistently contains more than 450 million colony forming units of beneficial rhizosphere bacteria per gram! "... It also states: ..."Charge is a 100% naturally-produced potting soil enhancer ..." Soil enhancer is not fertilizer IIRC.

Ecology: English Ivy prefers open forests but is adaptable to many habitats and moisture conditions. English Ivy serves as a reservoir for bacterial leaf scorch that infects maples, oaks, and elms. This invasive vine colonizes by vine growth and seeds that are spread by birds. Very few species of wildlife use English Ivy because it is mildly toxic. taken from the site linked below: https://projects.ncsu.edu/goingnative/howto/mapping/invexse/englishi.html

Top looks like a purple leaved Prunus. Second is a Dogwood.