Thank you all for good ideas and sharing experiences.  The poison works by turning their blood to cement or some such thing so they dry out.  Mothballs an rat spray seem like the best solution.  It is my own fault really as I use those plastic baskets for keeping things and groceries in the boot.  Setting them beside the car with rags in no doubt invited the mice to make a nest there and they just moved into the car when I put the basket back.  Thanks again.

You do not want to poison them.  They'll die and stink up your car.

 

Drive them away with moth balls as suggested.  Use lots.

Well if you find out how to get rid of them let know the people in NSW Australia

https://www.news.com.au/finance/money/costs/australias-mouse-plague-causes-tens-of-thousands-of-dollars-of-damage-to-mans-home/news-story/32a6b64ba9f3bf65618cc319ce30d5d1

On 6/15/2021 at 4:03 PM, Yorkshire Tea said:

Have you got a link to these on Lazada, please.

 

Sorry for the slow reply, I just got out of ASQ.

 

https://www.lazada.co.th/products/i1618374392-s4438848873.html