To clear it up, I am mostly using sealing/caulking interchangeably in this text.
Some days ago I started seeing cockroaches in one room that is also connected to another bathroom. I caught 4 over an inch ones, but I saw a few small and very small ones too. I think they are Oriental and pretty sure not German, but anyways I need to take action right now, doesn't matter whether they are coming from outside or some spacings in the walls, I want to seal all holes.
Now I noticed patterns where they go and I noticed two holes. Both on the floor, one going into the wall the other into the floor (at the edge of the wall), I also noticed that my door moldings are not properly glued, they can be removed with a hand and nothing will hold them back, so there are spacings made naturally between door moldings and wall just because there is nothing to hold them to the wall, so I will need to close these too. My plan is to set up gel baits, and close them off (tell me if this is not the smartest idea, I know I can pour in boric acid too there, but I think gel baits will be better) - however the question is not about this but the following:
I have no idea what caulk/sealant should I use, acrylic, silicone or even plaster for such application? Yes, some of them is wall, other is probably some kind of plastic door moldings, so I might need to buy different types too, I want something that will hold up good. I do not think there will be any contact with water, however some water resistance would be good as one of these walls got pretty bad mold so I am guessing that that place is more suspicable to water (as it is closer to some pipes - which is probably a problem on its own, so I might need to take that into consideration when choosing what type of sealant? Also, how important would be the gun for it, how much should I invest in it?