Milk Jugs Other Recycling Please recycle with the caps screwed on. Rinse Completely Thoroughly rinse out all milk jugs before you recycle them. Mold will grow if there is any trace of leftover milk, which can lead to an entire load being thrown out. Crushing Optional Crushing jugs saves space, so you may want to do it anyway, but it’s not necessary. Crushed and uncrushed jugs are equally recyclable. Did You Know? Most Eco-Friendly Milk Container? Plastic or Glass, Not the Carton Glass is often considered the most eco-friendly milk container because it’s the easiest to reuse, but its ingredients aren’t renewable and it’s heavy to transport. Plastic is easily recycled (although recovery rates are lower than they should be), but it often winds up being downcycled, which means it’s turned into products that can’t be recycled. Cartons never come out on top, because they’re not easily recyclable and frequently end up in the landfill. Read more on Slate.com. How To Make a Milk Gallon Sandwich Holder