The first thing is to check a few things such as temperature, pH and moisture levels of your worm bin. If any or a combination of the previously listed are off, your worms maybe trying to get out of unfavorable conditions, in search of greener pastures. If this is true, you will want to rectify the problem so as not to end up killing off your worms.

Temperature plays a vital role not just in keeping your worms happy and the rate at which your food scraps will begin to breakdown permitting growth of beneficial microbes for your worms. An ideal temperature is 70 to 75 degrees Fahrenheit inside the bedding material of your worm bin.  If you add to many green products to your worm bin, raising the pH level, the temperature will also increase, heating the bin, potentially to high.

If your pH is off, usually the result of being too acidic, eliminate adding anymore green scraps to your worm bin for a while until you rectify to an acceptable pH level of 6 to 7. You could add some agricultural lime or crushed egg shells to assist in lowering and maintaining proper pH levels. Also add more brown products for a while such as shredded newspapers and cardboard.

Moisture levels are a common issue as the food scraps added to the worm bin release additional moisture as they decompose. This is especially true for certain fruits and vegetables such as cucumbers, melons… This is probably one of the most common reasons I hear from people having an issue with worms trying to escape. Moisture levels should be approximately 70% to 75%, no matter which type of worm you are raising, red wigglers, African nightcrawlers or European nightcrawlers.

To begin drying the worm bin and to assist in keeping your worms from escaping, add some shredded newspaper to the top few inches of your worm bin. Worms prefer not to crawl through dry newspaper; hence usually this will keep many of them below the dry paper.

Another trick is to leave the lid off in a room where you can leave the light on. This serves a dual purpose. The first permits more ventilation, hence allowing your worm bin to dry out faster. Secondly, the light helps to keep the worms from poking their heads out as light disturbs them, hence keeping them down inside the bedding.

The last trick I have been meaning to post, something I tried a while back with effectiveness, is to build a flap under the lid of your worm bin.

Basically you need strips of newspaper approximately 6 inches wide. Next crease the strips in lengthwise so as the 6 inch strips now or folded in half, 3 inches wide as in the photographs below.

Tear off a few smaller pieces to cover your four corners. Then use longer strips for the remaining four sides of your worm bin.

Carefully place your worm bin lid on top and snap down into place.

Be sure to check daily for worms stuck up on the underside of the newspaper that are trying to escape. Simply place them back on the top of the bedding in the center of the worm bin.

If your worm bin is to moist or in the event numerous worms get caught up on the underside of the newspaper, replace the flapped newspaper when it becomes to damp, as it will lay down on the side of your worm bin, allowing worms to crawl out again.

Good luck in your vermiculture adventures,

Bruce Galle