Went away this weekend for one night. MIL and SIL came to stay to look after my DS. SIL has two kids and two dogs (I love the kids, tolerate the dogs).
MIL very tidy and houseproud. SIL is very untidy and is not massively houseproud. I am in the middle but like to look after things and am careful to not let things get ruined. I am very close to both of them and we all get on well.
My house was messy when I got back but I expected that with three kids, two adults and two dogs. I always let it go over my head because I think it can be tidied when they've gone. However, this weekend just made me so cross. When they were packing to leave, I noticed a round yellow mark on my cream bedroom carpet, asked MIL, she said "I'm really sorry, one of the dogs peed on the carpet, I've done my best to clean the stain". What annoyed me most was the fact the SIL didn't even mention it. I think she was hoping I wouldn't notice it. I said I was cross to MIL and she agreed it wasn't on and starting going on about how SIL was very slovenly and was pretty cross she'd been left to clean pee up. My carpet always marks if anything is used on it, even water, so I'm afraid to have another go at it and for it to look worse 
.
Others things include-I had a tiny bit of eye cream left (a very expensive one) and that had all gone. She used my towel plus another one in my bathroom (couldn't she have just got a fresh one). She always takes a cup of tea back to bed in the morning and has spilt tea on the stairs before-on this occassion, I saw her putting her tea cup on the wooden bedside table and had to ask her to use a coaster (her own bedside table is covered in coffee rings). Two empty coffee cups plus a glass just left in bedroom which I then brought down stairs. Utility room left with newspaper all over floor (because of dogs) and she'd rinsed out their food bowl in the sink and left lots of bits of dog food in the sink. I made a chicken dish in the slow cooker sat morning before I left and no-one had bothered to clean it out, just left it.
I can just feel the resentment simmering today but I'm wondering if I sound petty, just wanted to know what others thought.