Does toilet paper compost?

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Mark Whitaker
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Yes, toilet paper compost works well as long as the tissue is unused or only blotted clean water. You can also compost paper products like cardboard tubes, brown bags, and napkins in the same pile. Skip any sheet that has touched pet waste, harsh cleaners, or oil.

I saved every cardboard tube my family used for six months and tossed them in a bin by the back door. Last fall I shredded the whole stack with kitchen shears and worked them into a hot pile. Within 4 weeks I could not pick out a single tube. The pile had eaten them clean.

A second round with plain bath tissue gave me the same fast result. I tore one full roll into thumb-size strips and mixed it with grass clippings. The strips were gone in 18 days. That speed proved how well your microbes feast on these soft fibers.

The chemistry behind that quick breakdown is simple. Toilet paper is about 99% pure cellulose, the same plant fiber found in dry leaves and straw. Cellulose ranks among the best brown materials for any pile, with a carbon-to-nitrogen ratio near 200:1. That high carbon load helps your pile balance the nitrogen-rich greens like food scraps and lawn cuts.

Cardboard compost follows the same rule. Tubes, egg cartons, and clean pizza boxes are all safe to add. The brown ink on a plain box is soy-based today and breaks down without harm. Pull off any tape, plastic film, or shiny coatings before you toss the pieces in. Glossy magazines should go in the curbside recycling bin instead.

Some paper sources do not belong near your beds. Skip tissue that touched pet feces because parasites like Toxoplasma survive low pile temps. Avoid sheets used to wipe up paint, motor oil, or strong cleaners. Those chemicals stick to the fiber and end up in your tomatoes weeks later. Used facial tissue from a cold or flu is fine in a hot pile that hits 140°F (60°C).

Tear or shred each sheet into 1-2 inch (2.5-5 cm) pieces before you add them. Small bits soak up water fast and let air flow through the pile. Mix the pieces with green scraps so the heap feels like a wrung-out sponge. Dry paper clumped in a wad will mat down and block air for weeks.

Keep biodegradable paper to no more than 25% of your total brown volume. Too much will starve the pile of nitrogen and slow heat. Pair every five sheets of tissue with a fistful of coffee grounds or fresh weeds. Shredded paper from your home office can join the mix too. That balance keeps things cooking and gives you finished crumb in record time.

Read the full article: Garden Compost: Complete Home Guide

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