As these can be walked through with potentially zero-risk of mosquitoes following you through, then it would be useful in large spaces. IE hospitals, churches,

As these can be walked through with potentially zero-risk of mosquitoes following you through, then it would be useful in large spaces. IE hospitals, churches, community centres, etc. That mosquitoes can quickly jump from host to host. Although being able to walk through one means I'd likely have one installed on my front and back door in no time. I'd possibly throw them up in my kitchen doors too as a just in case.