They have been dog ticks, not Ixodes (Lymes) ticks. You should keep 500 mg caps of doxycycline in the refrigerator. If you ever pull a tick off you and you believe it has taken a blood meal (i.e. tick is engorged and firmly attached, surrounding skin red and itchy), just take one 500 mg doxycycline PO. This is about 90% effective and a single dose has virtually no side effects. Original study was in NEJM.