Being a vetran of cardboard houses, I too had this problem for a while
What i found worked best was;
1. dont shower or bathe, bugs love the fresh smell of soap and deoderant.
2. Always eat all your food, dont leave anything for them to eat.
3. Line all openings with glue the bugs will get stuck in it ( vasiline works if you have no glue)
4. paint your box red, bugs dont like this colour ( if you dont have paint, your blood will do
5. always waer you tinfoil hat incase some critters get in, it will protect your brain.
6. Dont bring your Girl/Boyfriend home. Go to thier place. bugs love the smell of lovemaking
8. Fart as much as possible, the methane gas kills the waeker insects ( be carefull to much will give you skidmarkes and attract more bugs)
9. Try singing to them, sometimes you can control them with a beutiful melody
10. move. try to upscale to a tin hut, you will still have bugs but at least you can brag to your friends about your new house.
