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FAQs

What are the specs on the Urban Worm Bag?

  • Width (including frame):26 ¾ in (68cm)
  • Length: (including frame):26 ¾ in (68cm)
  • Height: (including frame):30 ¼ in (77cm)
  • Bag Only Height:22 in (56cm)
  • Bag Only Width:24 in (61 cm)
  • Bag Only Length:24 in (61 cm)
  • Weight:7.5 lbs (3.4 kg)

  • Volume at Max Load:5.3 cubic ft (122 liters)

  • Fabric:900D Oxford with a polyurethane coating for moisture resistance

  • Frame:Lightweight iron frame with plastic 3-way connectors

  • Zippers: Marine-grade #8 heavy zippers

How long until I can begin harvesting worm castings?

If you start from scratch, it should be about 4-6 months before you should expect to harvest worm castings from the bottom of your worm bag. You can reduce this time (and better ensure a happy home for your worms) if you start with an existing amount of vermicompost as a starter material. 

How do I maintain proper moisture in my Urban Worm Bag?

This will depend on the ambient humidity wherever it is you keep your bin, whether or not you keep it indoors, and whether or not you keep it in your basement. 

The Urban Worm Bag breathes so well that it can tend to dry out too quickly if left neglected. 

In any case, if you grab a handful of vermicompost and squeeze it, you should be able to squeeze out a drop or two of moisture, much like a well-wrung out sponge.

If it's too wet, add some dry bedding and stop feeding for a few days.

If it's too dry, use a spray bottle or spritzer as needed to maintain appropriate moisture levels.

What if my Urban Worm Bag has a foul smell?

A properly maintained worm bin should not smell bad. More than likely, the bin is over fed, too wet, or both. Because the Urban Worm Bag has such good airflow, it is likely your bin has been overfed and the food is decomposing faster than the worms can consume it. Remove any excess food, add bedding, and monitor conditions.

How much vermicompost or worm castings can the Urban Worm Bag produce?

Your results are dependent upon too many variables to give you a good number.

However you can use commonly-known rules of thumb to get a very rough estimate. Conservatively, worms can eat 25-50% of their own weight per day and at maximum density, you will have around 2 lbs of worms per square foot.

The Urban Worm Bag has roughly 4 square feet of surface area. So an Urban Worm Bag stocked with 4lbs of worms will be able to process roughly 1-2 lbs of food waste per day under good conditions, roughly 50-70% of which will exit the worm in the form of worm castings.

How many worms should I purchase for my Urban Worm Bag?

We recommend no more than a 1 lbs of worms to start with. 

My Urban Worm Bag is dripping. What is happening?

Your Bag has been overfed or overwatered. A properly-maintained Urban Worm Bag, or any worm bin for that matter, should not be draining an excess of water, also known as leachate.

Is the Urban Worm Bag rodent-proof?

Unfortunately, no. This worm bin should be kept indoors, preferably, and away from rodents who will certainly be able to chew through the fabric.

How can I use my worm castings?

This is up to you! But most people prefer to use worm castings and a soil amendment at a 10% substitution rate or apply it directly to the base of their plants as a top dressing. Note: This will not burn the plants.

You can also brew worm tea by mixing water and a compost tea bag of worm castings at roughly a 1% concentration and apply as a soil drench or a foliage spray using a handheld low-pressure sprayer. This is an incredibly economical way to use worm castings.

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