Dont put thick mats in the machine.
Can you put carpet floor mats in the washing machine. To remove the majority of the stains and discolorations you can use any of the following cheap and readily available materials. Dont dry your car floor mat in the washing machine or in the dryer. Dont put cracked mats or mats with any wear and tear.
You can wash 3D and 5D mats in laundry powder or dishwasher liquid with an equal amount of water and wash for a few minutes it gives wonders for your car while your car might feel and smell better after a clean wash. Thick mats are difficult to wash in washing machines. Proper air circulation will dry off the car mats in no time.
I would say pass on putting floor mats in the washer dryer. I wouldnt think so. However if the rugs have a rubber base that gives them grip and prevents them slipping around then it is not easy to wash them in a washing machine.
Hand washing This takes more manual exertion than simply running your carpet through the washer but may. As rubber is quite prone to heat the excessive heat of the dryer might melt the rubber of the car floor mat. Similarly how do you wash a bath mat in the washing machine.
I think the washing machine would probably tear up the stuff on the bottom of the mat. Such rugs can be easily washed in washing machines and dried up to keep them clean and hygienic. Carpet car mats can be put through the washer if they have no plastic or rubber parts in their design.
It can be the cheapest and easiest way to wash the floor mats. Make sure to dust them off the best you can outside pretreat any stains and then wash them in warm water on the gentle cycle. If you are using a top-load washing machine on the other hand you should ensure the load is even on all sides.