I am allergic to the budgies I accidentally had to adopt - they came to live with me for a few weeks but I ended keeping them as they weren't being looked after. I have been advised by other budgie enthusiasts that they use air purifiers which are helpful.
I just got a voucher from John Lewis so I have to buy it from there.
Cannot be ionising as that would kill the budgies.
Just for the living room which is a very average sized new build.