Depends on the species, mole rats do. I'm not sure about aliens having queens, but I guess if you believe in them then anything is possible.
Jack Russell terrier. the AK47 of pest control
I used a poison, slow acting so the idea is they take traces of it back to the nest and also kill the queen;
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My loft earlier.
I reckon flame units for those
I'm worried it'll damage the lath and plaster ceilings. Have you tried pulse rifles with successful results in an older building?
Jack Russell's Weill get the bastards. The rats come in from outside but don't tend to live indoors. My Russell's killed several and got the last after I'd concreted the hole the rats were coming in through trapping him inside, they nearly tore him in two when they got him. Bait the traps with chocolate if you're using them.
If they are rats in the loft check for access points at ground level or climbing plants if you can't find any holes then you have to suspect a fault on the drains allowing furry friends into the cavity wall and loft space. Chocolate biccies are all good way to check if rodents are current.
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