Expensive fly screen failed on the cat - is that a defect?

My cats can even climb up our fly screens. They have been doing this since they existed (about 6 years). There are now small holes in them, but you can only find them by searching and they neither affect function nor appearance.

What kind do you have there? Do you know the manufacturer? I also saw a product from a specialist dealer at friends' own house, which also seemed significantly more robust than what we received. But it is also as Nida said: The net is very thin and is hardly visible.

Yes, those are the things where the insects got fried, right? Those were the only ones that effectively destroyed insects... probably no longer allowed because of animal protection :oops:

We would, too. But I can't stand mosquitoes, I seem to be allergic to them; when one of those creatures bites me, a single bite tends to swell up to about 20 cm in diameter. :(
Cortisone, Bite-Away, I've tried everything – the only thing that reliably helps is not getting bitten.