Answered by: Maulana Shadman Ahmed
Assalamu Alaikum Wa Rahmatullah
We live in a flat can we spray our female cat to prevent her to get pregnant, is it permissible in Islam?
h, The Most-Merciful, The Most Kind
There is no harm in neutering your cat if there is a benefit in it or averting any harm such as unwanted kittens. 
Only Allah knows best
Written by Maulana Shadman Ahmed
Checked and approved by Mufti Mohammed Tosir Miah
Darul Ifta Birmingham
خِصَاءُ السِّنَّوْرِ إذَا كَانَ فِيهِ نَفْعٌ أَوْ دَفْعُ ضَرَرٍ لَا بَأْسَ بِهِ كَذَا فِي الْكُبْرَى [Fatawā al-Hindiyyah volume 5 page 357, Dār al-Fikr]
This answer was collected from DarulIftaBirmingham.co.uk, which is run under the supervision of Mufti Mohammed Tosir Miah from the United Kingdom.