Fly repellents?

Question

I do not believe in killing creatures so I need a fly repellent that does only that: repels, prevents flies from entering the house. I have looked online for ages but have only managed to find insect killers. Does anyone know of a non-death fly repellent that works?

Thanks,

Answer 1

A fly forceshield eh? apart from vacuum sealing your house then there is nothing

Answer 2

go to your local chinesse herbalist shop you need extract of spider urine dab this around all doors and windows,i also on each window have a venus fly trap, and i also have spider transfers on the windows,my house is fly free

Answer 3

Citronella oil works!!