Hey everyone!
So I posted here before about adopting two make kittens, that fell through - long story short we weren't in our forever home in time and they were adopted by a lovely family. So when the time was right we adopted two kittens - male and female. They've been indoors all along as they are only being spayed/neutered this week and also microchipped. Happy out and love each other.
However, little girl is getting more and more curious about the big bad outdoors - Everytime I go to the door she tries to bolt out and has been successful. Have managed to get her back in rattling food but I don't know if that will work every time. I do intend to keep them as indoor cats but I would like them to be able to have supervised outdoor access - theyre animals after all and I feel it would be cruel to deny them.
So basically I am asking for tips to be able to let them out to play when I'm still there or watching them through the kitchen window but ensuring they don't roam and will come back.
For context, our garden is enclosed but has walls a growing cat would eventually climb no problem, could also jump on the oil tank. There are other dogs and cats in the estate including a large unneutered tomcat who likes to roam the back walls of all the houses and piss on them
have tried a harness to take them out gradually but that was not happening they nearly lost their will to live when I put them on 
Also to add they I will not be trying this until they have recovered from their spaying and neutering and have been microchipped.
And they are 4 and a half months.
Thanks to everyone in advance.
As per mumsnet rules.. I have attached a photo of said cuties 