I thought that's probably why you mentioned it. I've had a similar experience with drugs not working on me properly.. and they amount of info they need isn't something i could give them for neeps.
It's worth telling them about certainly but for them to do anything useful they'd have to do blood and immunity tests on the monster to see why she's not as susceptible to their treatment as other cats, which would be quite useful but ain't happenin lol.

we'll see how this weekends re-fogging of the house goes.. and daily doses for monster to see if that's better for her (annoyingly expensive but.. better than furless feet in winter lol). if that doesn't work OH can take her to vets in 2 weeks time to get super strength sheep dip for her.

shortback.. do keep bringing out new ones as CP mentioned earlier the buggers get immune..also the manus find better concentrations/combinations of drugs to deal with the buggers on various different levels via different application methods (systemically/environmentally etc). omg i have to stop being such a science nerd.

however i don't think immunity the problem this time.. i think it's neeps having trouble rather than the drugs being effective as bubs is fine and flea free. We can't use spot on on neeps as she reacts to it so frontline is out unless they do a tablet version of the combi, which i think is what we've used on her recently. Hopefully the vets will be able to prescribe a higher dosage tablet if the current ones don't work over the next few weeks.

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This is not a game of 'who the fek are you'.

Not a single gram of fek shall be given today.