Things to know before. you go for a test. Do not perform maintenance work or. make repairs before your first test. If you drive a 1996 or newer vehicle, do not. disconnect the battery before testing. If your. vehicle has recently had a dead battery, drive.
A tick bites a host animal, then burrows its head under the skin. While the bite isn't painful and can go relatively unnoticed by the host organism, the tick can contain harmful bacteria that can cause subsequent maladies. Proper removal of the tick is key in preventing the release of this bacteria.
These pests latch onto or burrow into the skin as they breed and lay eggs. As these creepy crawlers derive nutrients at the host's expense, they sometimes leave bruises behind that swell on top of the skin. As the wound begins to heal, the bruise often changes colors; this is part of the healing process and is totally normal.