Nohomom on "Recommendations for k9 companies in Los Angeles. How do you know they are gone?"

Hi all,
I had confirmed bb in April and got two chemical treatments. the pco came back 14 days after second treatment and inspected again, he spent about an hour and a half ( I was following right along) and he says we were clear.. I have been washing,drying on hot ,vacuuming, steaming and checking everything every few days.So far so good no fecal stains or blood or bugs. I did have a rat caught inside my recessed ceiling and have been trying to rule out mites I have caught a few things on glue traps ( posted pics on here and id as book lice) I've been getting "bites" every now and then. Weekly sometimes longer so I still have everything bagged up and bed is still isolated. I just ordered the packtite passive monitor and want to get a k9 inspection to see if they are really gone or at least find them if they are here. Can anyone recommend a reliable k9 company in Los Angels ca area? There are so many and I don't know which is best.
Thank you in advance!