Yup, but I found the ends don't justify the means. When running 3 classes it's just so much easier and faster to use the sink to clean tires rather than scrubbing with very little water in a tupperware or bucket. I don't typically recycle foams and since I typically run on a high grip clay track I wear tires out like mad so I'm always buying new tires/foams/wheels so I'm not too concerned with the longterm breakdown of the insert. The foam I was forced to recycle last friday was on a wheel before I started using the leather punch. The foams tend to dry out a bit easier now that I vent through the tire and not rely on venting through the wheel.