<human>: Can you provide a brief rundown of the text in within 3 sentences?

My husband and I live close enough to his parents that we frequently visit on weekends. We have a dog and when we started bringing him with us I noticed that the dog would have sores all over his stomach, chest, and underarms. This only happened at the in-laws and never at our own home.

I took the dog to the vet and after doing several tests the vet was unable to determine what the cause was, but they were very obviously bug bites. The dog was placed on new fleas and mite medication, but the bites were still happening when we stayed at the in-laws.

Since I wasn't even sure what was causing the bites, I alerted my MIL so that she could keep an eye on her own pets. However, she waved away my caution because none of them have gotten the same bites. I even suggested that they spread diatomaceous earth (powder that kills mites) in the yard since they already have it and use it on their pets. That has not been done.

Now, every visit since the vet visit I have reminded the family not to let the dog out unless he's on a leash to prevent him from laying in the dirt or doing whatever it is that he does to find these bugs. However, my MIL is constantly letting the dog out even after I have asked her not to. The bites don't appear immediately, but, lo and behold, the dog always gets eaten up and then scratches CONSTANTLY for the next two weeks.

My husband always mentions how bad he feels for the dog after the fact, but he waves off my initial requests to keep the dog inside and says he'll be fine (obviously not). My MIL is always surprised by the bites, but isn't helping at all to prevent it from happening.

I'm getting to the point that unless they listen and follow through with my requests I will not be visiting. I know it's *just* a dog, but I don't feel that my requests are overstepping any boundaries. I feel like no one is taking my requests seriously and then I get angry when they coo and feel so bad for the dog when I told them how to prevent it.
<bot>: In-laws' yard is harboring mites that attack my dog and my husband is not reinforcing my requests for them to treat their yard for mites and/or require the dog only be let outside on a leash.