Leave Your Cat Carrier Out
It might take several hours of training before your cats get used to the idea of going into their carrier. They might initially find it strange and uncomfortable, such that they throw tantrums when you put them in it. And, this will make it hard to use this means of transportation.
To erase the phobia cats has for carriers, you need to take measures to ensure they feel homely in it. Strategically leave the carrier in a place in the house so that your cats can easily access it. It will enable the cat to sniff and even sit in it regularly, creating less anxiety when it needs to be used to go somewhere.