Beau and Luna have been missing since a break-in at Tangos Cat Boarding facility in the early hours of Saturday.

CCTV footage released this week appeared to show a man making his way to the back of the public cat kennel where a security screen was destroyed and a window smashed.

The family of Beau and Luna had been holidaying on the South Coast for the school holidays during the break-in.

Leah Whitfield said the Kambah family had used the kennels many times in the past and were in no way worried about the safety of their cats at the RSPCA.

"It was just such a shock when they called. It was the last thing I could possibly imagine happening," she said.

Ms Whitfield said not knowing where the cats were or whether they were safe was one of the most difficult things to come to terms with.

"The thought that we might never know where they are - that I think is the worst," she said.

Ms Whitfield said her two teenage daughters in particular were suffering. She said the eldest of the cats had been with the family since her youngest daughter was seven.

"The younger one we only got at the end of January last year," she said.

"We got her just before lockdown as a very small kitten and she was such a comfort to us, as the older cat was, too, while we were all at home for 10 weeks," Ms Whitfield said.

Ms Whitfield said Beau and Luna were part of their family, which was why they were all so crushed by the incident.

"I keep hoping against hope that somehow they might find their way home but that seems quite unrealistic," she said.

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"I keep looking out in the back garden just in case, but it's a long way from where they went missing and where we are."

Ms Whitfield said the house seemed empty without their pets and the family was pleading for their safe return.

"Please take them to the RSPCA or to any vet in Canberra so that we can have them home, I don't think there would be any questions asked," she said.

ACT Policing confirmed on Thursday the investigation was still ongoing. They could not provide further information at this time.

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