From the pic it looks like flea bites to me. The number of fleas in our yard (NJ) this year has been amazing. And of course either they attached to us or our dog and they were brought into the house.
We had an awful time getting rid of them but I believe we have finally succeded! The itching from the bites was very bad actually causing me to wake up with it at night. And it took almost two weeks for them to start to go away. We wound up applying an insect growth regulator which prevents eggs and pupae from developing into adults. It was quite a battle. Good luck identifying the culprit at your home. Pete
We had an awful time getting rid of them but I believe we have finally succeded! The itching from the bites was very bad actually causing me to wake up with it at night. And it took almost two weeks for them to start to go away. We wound up applying an insect growth regulator which prevents eggs and pupae from developing into adults. It was quite a battle. Good luck identifying the culprit at your home. Pete