Dude their hommign in insane they seem to start homing froma  further range then scouts can detect them. And while homming even thou i had flak frigs with nothing to shoot they didnt shoot the stupid things. But later i coudl easily approch my scouts and kill them no problem without having a single one fo them home. So I think their is a bug with the mines. Further testing under control situation.

of course there is a price for deployment.

I play as advent, and i was just wondering if there is a limit in the creation of mines per hangar (like fighters), or will it continuously create these as long as i have credits? You see, i tried making some mine units and put their deployment on autocast. I thought i was just making around three but when i got back to the same planet where I made them, i was surprised to see that the grav well was "littered" with mines, and it seems mines are continuously produced/deployed as long as i have enough credit to support them. The grav well/planet looked "really dangerous" with all the mines scattered, but it left my credits very low. Before, I  tried to find what's eating my credits when i'm not consciously producing any units, and found out the mines were the culprit.

I only builds mines when I am playing Advent; the other two factions only work when you get very close.