Thanks for your replies. At this point building a catio is out of my budget, although it might be a good idea some day. But I will try the other suggestions and see what happens.
I have a cat and four dogs. In the house I lived previously, he was an outdoor/indoor cat with a doggie door where he could go in and out as he needed. He spent most of the day outside, which was worrying enough for me because years ago a cat I had died outside and I never found out why, I just...