Well, let's look at the evidence. A lot of insects can get inside the house, like flies but they fly, ants and spiders too but this is not what we saw. Earwigs too, but they do not want to be in the house and like dark areas, so no. Cockroaches are the most obvious ones since they live where food is plentiful and available. Where would they find all that food:
1. Amber's bed is likely litter with all kinds of food since we all agree that she eats many meals and snacks in bed.
2. The dishes are likely not done on a regular basis by AOr Becky or Eric. Rickie is probably the one doing them.
3. The dustbin is always full, with pizza boxes and other delivery containers strewed around.
4. The cat and dog dishes are likely not cleaned very often and probably caked with foodstuff.
5. There is a lot of foodstuff being stored in the kitchen with possibly open containers and boxes.
6. Refrigerator mysteriously being disconnected with no one noticing for days.
With the preponderance of the evidence, cockroaches are likely the culprits.