How to help scared new kittens adjust to their new home and free roam?

I would probably start by confining them to one room of the house while they may still be becoming accustomed to being indoors and litter box use. Be sure they have plenty of places to hide and also areas to climb like a cat tree or shelf. Also I would recommend a Feliway diffuser in the room which can be calming to many cats!

Congrats on your new cats! No, you didn't run it for Escher and Cringer by not putting them in a small area for the first 24 hours. Moving into a new home is stressful for any pet, and it will take them time to adjust to their new home. If you can, move them into a small room now with food, water, and litter boxes and allow them time to adjust in there. Go and visit a couple of times a day, and let them come to you. Praise them when they do and give them treats. After a few day sin this room, let them out to explore the rest of the home. They will adjust, and be sure to reinforce any interactions with you with praise and treats.

The best thing you can do is make sure that each cat has their own private space. You may keep each cat confined to their own room with food, water, and litter box for the first couple of weeks. Once they are used to the new home, you can let one cat out so that they can start to smell each other through the door. After a couple of weeks, you can do supervised time together. Pheromones may help with anxiety: https://www.drsfostersmith.com/product/prod_display.cfm?pcatid=40373&cmpid=sc

I would recommend trying Feliway products to help de-stress the environment. You can also try a melatonin supplement to help calm Tor. I recommend using Naturvet Quiet Moments with Melatonin Calming Chews, which you can pick up at your local Petco. I hope this helps! You may also consider taking her out and socializing her with your friends and exposing her to more people. Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

Good question! You do the introductions slowly, yes. The ideal way is to put the kitten in one room and the other cats in the rest of the house. Once the kitten is cleared by the vet, you will want to put the kitten in the rest of the house and all the other cats in his room. Do this for 30-60 minutes a couple times a day. That way they can get each other's scents. Also, at this stage you will want to feed the cats by the door of the kittens room; feed the kitten on the other side of the door too. So they can smell the kitten and get a reward at the same time. Once that is going well you can use a baby gate to separate them at the door for feeding. After a few days if that is going well (no hissing etc) you can let them all out together. When I say feed them at the door I mean something really good that they will consider a treat like canned cat food, canned chicken or canned tuna. Make it a really pleasurable experience! I also strongly recommend you get some Feliway diffusers. It is "happy cat pheromones" that really works to calm cats down. Use it for at least 2 or 3 months time. Hope this helps. I know it's a long process but it is much better to do it slowly than to cause issues by just throwing him in!

Moving into a new home can be very stressful for kittens - since she has only been with you for 4-5 days, it's likely that she's still adjusting and getting settled. It will take time for her to feel safe and comfortable in your home, so I would be patient for now and give her plenty of time to adjust. You can try using Feliway pheromone diffusers around the house to help make her feel more at-ease, as well as a natural calming supplement like Zylkene or Composure if she seems anxious.

Once you get to the new house, it is recommended to restrict her to one room for 2-3 days and it is also recommended to not let her outside the house for two weeks. keep the cat carrier open in the new house as it will be a comfort zone for her during the first 24 hours. try bringing as much from her stuff as you can to the new house (water and food bowls, scratching polls...).