Well, Bless your heart for caring enough to take them and try and find their home. many others would just ignore them. AS for micro-chipping, I have 2 Bichon's. One came to me micro chipped, and the other did not. I read a lot on the internet about cases of animals that developed cancer or tumors near the site of the micro-chip, being a foreign object, I too was against it, so I chose not to micro chip my second Bichon. We installed an underground invisible fence, so I put collars on my dogs when they went out. I got very comfortable in the am, didn't bother with the collars as they only went out to go to the bathroom, and hurry back in to eat breakfast.
Fast forward...one Sunday morning after a torrential downpour during the night. I threw my bathrobe on, went downstairs and let them out. My bichon that wasn't micro chipped didn't come back. I threw on my sneakers...trudged out, he took off somewhere into the woods. It was soaking wet, I had to run back into the house, throw some clothes on and go out searching, having no idea where he was, or what direction he went in. IF you know anything about Bichon's they have a mind of their own and don't listen, they follow their nose. My poor Rocky has never left my yard, so I knew there was no chance of him finding his way back home....Panic set in when I realized that if he made it out to the main road, if he survived and someone found him...I would NEVER get him back as he had no ID on him...I was in tears and felt so STUPID cause if I had him micro chipped, I knew I at least had a chance....know I had none...
I started walking out in the woods and listening....after quite some time, I saw a glimpse of him and managed to catch up to him and scoop him up in my arms.
The very next day, he was at the vets getting micro-chipped. After my experience, IT IS A MUST!!
I hope you find the owners and I also hope they learn from their experience as well.