Right that makes much more sense if she saw how freaked you are by this situation she might have just been trying to make you feel better. Although it actually seems to have made you feel worse. I'm looking at that photo and thinking, "Some sort of standard fur mite - not to much of a bother for the pigs - there'll be something to kill 'them off once the vet's sorted themselves out. No bother for humans, no bother for the household." Obvs I'm not a vet and I can't come up there and have a squizz or a rake through your hair, bless you. But that's kind of how it's looking from the outside - the only solidly unusual thing about your posts is that Xeno-450 doesn't seem to have worked and it's such a reliable workhorse at the right concentration. Resistance can happen though - that's why other things have been invented too. But you're having sooo much anxiety over all this and I really feel for you because I've been there.
You sound to me like you're in the same mental health position I was in when we got the moths. You're really upset and feel itchy and distressed and worrying about the kids (the kids are doing just fine) and all the piles of their cr*p that mean so much to them and which I bet right now you'd happily set fire to! And you can't get a break or see a way out of it and it all feels like the end of the world
So, story time... or maybe confession time because I haven't posted this whole tale before...
I'd been preoccupied with our little crawling things downstairs which I could quite clearly see
all over the downstairs - that's 4 rooms with hard flooring. In the cupboards and everything. In the kitchen corners, but not in the food. On the walls and the TV screen. Not on us or the pigs or the kids or clothes or washing etc. I didn't feel itchy because they weren't that sort of thing. It was annoying, but even at the time I recalled that we'd had these things on and off for a year or so because I'd been seeing them around and casually squishing them and not bothering. It was that the numbers did suddenly seem to go up. Possibly a spate of warm, damp weather or maybe a bit of rising damp in the dining room which we did have at some point - but I can't quite remember. It's a crumbly old house. So it was a pain in the buns and pretty tiring cleaning round but I was fine for a few weeks.
But then finding the moths upstairs was too much, and I totally freaked out and ended up in therapy for a couple of months. Upstairs had been my sanctuary, because the carpets prevented the bugs from getting up there so once I was upstairs my head could have a rest and I could relax. We used to lay in bed, me and the kids, and watch Sooty. It was about all my tired old brain could cope with. We all like Sooty and I used to go to sleep ridiculously early then kind hubs would put the kids to bed.
The therapist said that the problem was caused by a sort of OCD - which I didn't have any history of but apparently it can happen to anyone, if you have a big enough shock! Then you end up with a sort of PTSD. My cleaning efforts (which in the end made little difference) were a repetitive behavior which reinforced the worry and meant that I was trapped in the cycle of trying to get everything 'de-bugged' so I could feel safe from infestation. Tbh I could have left the dust and just sprayed round the skirting boards with Insectrol - not all up the walls and over the floors or anything, just round the edges of the rooms. That would have easily been enough (tho the moths did require a professional to save the stair carpet) Of course as a housewife (albeit not a very good one) you clean round a lot anyway and that was the nub of the problem. My OCD behaviour wasn't a superstitious tapping 3 times on something that could be avoided, it was just my normal daily activities but with the stakes raised - in my mind raised a mile high, because I was dealing with a scuttling unknown and I had young children. Who, I might add, can't remember anything about any of this - not even the bit when I piled up all the furniture into the middle of
every room in the house, gave the pigs to my friend for the weekend, and moved us all into a hotel while the spray man came round. He'd just said he'd spray round the edges of the rooms and to stay out the house for a couple hours till it dried. He did say he'd never seen anything quite like that before - he had quite the tale to tell back at the office! Especially as he had to come round two weeks later, and two weeks later again to complete the course so to speak and I did exactly the same each time. Of course, the first spray killed everything straight off - in practical terms that was job done. But it took me a good year to get back to normal. I won't lie - it was a horrible time. But I remembered it with a shudder as "that time we got infested" and hubs remembers it vaguely as "that time mum went a bit funny" which about sums it up. Now we're some years on that's how I remember it too.
The microbiologist in me knows fear of infestation is a sort of primal fear people have whether they realise it or not, to help us avoid getting diseases, which is why our primal brain raises the stakes so high. We saw it during Covid - particularly with the Vax/anti-Vax arguments. I know someone who was quite convinced they could only avoid Covid by washing all their fruit in hot soapy water which made all their apples taste of Fairy Liquid. Once the idea is burned hard enough into those neurons you're stuck with it. The 'cure' is difficult because it's basically thinking about something else until the stress wears off - which can take months. Then the scary neuron superhighway is diluted by all the little by-roads of other daily thoughts. Talking it through can help. Reason can help a lot - although your panicking brain has to hear it from someone like Chris Whitty to be swayed. If you imagine walking down a well-trodden, muddy, sunken country path (in the wrong shoes) we look to the edges of the path for the drier bits and try to straddle onto there. Or sidle up along the sloping grassy bank gingerly hanging onto the barbed wire fence to avoid the deep sludge. But it's really hard, and inevitably at some point we slip and slide back down into the mud. The pull is always there and it's a struggle. But we must keep trying, and it gets easier as you get used to the terrain. We can get through it despite our unpleasant thoughts.
The thing I kept going back to was that I like to garden, and I go camping. The outdoors is alive with all sorts of critters running over you but I felt 'safer' crawling about in the soil than in my own dining room. In our front room there are old floorboards and beneath those it's just soil! But I wasn't too bothered about that either because things are 'supposed' to live in soil and outside. It didn't make any sense. I knew it was me going wrong - I just had to keep taking a day at a time. Even in the hotel I was checking round the edges of the rooms for anything that might invade our bags! I mean who does that? The therapist, after an initial chat, always guided the sessions onto some other topic completely. She was a clever girl.
Houses used to be crawling with all sorts in the old days which is why traditional shops sell things like mouse bait, moth traps, fly paper and insect spray. I just had to get to 35 before I realised that. By all means have a spray round the fireplace if you'll feel better about things. Have a bit of a spray round the skirting if you like. And I'm sure you regularly check everyone for headlice with little kids anyway. But I would lay cold hard cash on whatever is on your piggies having nothing to do with any itching you might be feeling. Piggy parasites don't live on people. The only time people who post on here have a problem is if a pig gets the itchy fungal infection called ringworm (it's
not a worm). My son caught it when he was accidentally scratched by one of our first pigs. We saw a very clear round red ring - hence the name - about as big as a 2p, and it itched him sometimes. A tube of cream cleared it in a jiffy and there was no aftermath and it was all fine. We've had pig lice (the running sort) and pigs mites - even the serious one sometimes referred to as 'walking dandruff' and we've never caught anything. Only the pigs have been itchy. We've kept pigs 10 years, there are folks on here who had pigs much longer, there are folks who volunteer in pig rescues and are exposed to all sorts of things when those poor piggies first come in, and I've not heard of
anyone who said they caught mites or lice from guinea pigs. Saying that, sometimes people
have developed allergies to their fur or to their hay. But you have to think, "Did I start to feel itchy when I got the pigs or when we got this new hay, or was it only when I realised they might have passengers?" Only you can answer that question.
Maybe that helps a bit? If you think it's something more physical than anxiety (not 'just' anxiety, because bl**dy anxiety is almost worse than anything) you could try a one-a-day over the counter Loratidine (an antihistamine - check with your pharmacist it's suitable for you) if you think it might be an allergy, or try two paracetamol and a soothing drink before bed which is what I do when I get nervy. And try to look on the bright side. The vet knows they've got something - it's on them to tell you what to do for the piggies next. Give them a call tomorrow if they're not already been in touch today.
Take care x
but yeah any itching of rashes these things you would suspect if you have pets would be them causing sometimes. 
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Aww they are so cute! It sounds like the hair removal is a relief lol especially in the warmer months! Thank you for your message I hope my pigs are beasty free surely after 2 and then 3 rounds of frontline lasting a month each… I just don’t know what to do about regularly treating them with Zeno would you recommend every 6 months as a precaution or is that not needed and causing resistance? Many thanks for chatting 
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