I'm not jealous in the typical sense of the word.  I am jealous of the time I get to spend with my DH, since there's not much of it.  His crazy schedule means when he is off (and not on call), there's very little together time.  I don't leave the house much during the day because of the free ranging chickens and I can't drive at night.  However, DH works in the town where the girls are and they are never more than five minutes from his location (small town).  They know they are welcome to join him and the other officers either at the PD or on their dinner break.  They only text me because they know that their dad sleeps later than I do, that he hates text messaging and doesn't take the time to reply when he's working.  
For the record, DH and I sat down and had a long talk about it today.  He admitted that he's been letting me handle it because it's easier for him.  We even wrote down what the issues were with their visits.  Before or at the beginning of their next visit 
he is going to sit them down and explain the house rules.  
- Visits will be for a few hours only (no overnight).  We don't have a spare bedroom and we live on a totally different schedule than them, in that we are up all night, sleep late in the morning.
- The dog stays home or in a crate, at all times.
- No special meals will be cooked for the GS.
- I cook, they clean up.
- #2 not sit here ignoring us, with her nose buried in her cell phone the whole time.  She will not visit sick and she will visit, not text with her friends the whole time.  
- They will leave my house as they found it.  
Thanks for the replies.