The Ultra-Fab # UF21-001095 wheel chocks are made in China.
If you'd prefer a chock manufactured in the US, I'd recommend the # 337WC24483 from Buyers Products.
If you click the provided link, you can see a video of my buddy Randy demonstrating the chocks I recommedned. view full answer...
The Super Grip Chock Wheel Stabilizers for Tandem-Axle Trailers and RVs, # UF21-001091 are designed by Ultra-Fab an American owned company and outsourced for manufacturing. These are a great solution to prevent the tires from rocking and causing front-to-back motion when you are parked and inside the camper. I've attached a review video of the Super Grip Chocks for you. view full answer...
A wheel chock made of natural rubber such as Buyers Products # 337WC1467A will certainly have an odor when it is brand new, and also for some period of time after use. Plastic chocks like # 288-02011 tend not to have this issue.
You may have noticed that a new vehicle or a vehicle with new tires will tell your nose it is there when you enter the garage, for instance. Over time this odor fades.
But on the other hand, a natural rubber wheel chock cannot crack or chip, will better resist... view full answer...