

At first the larvae will look cute and tiny, happily munching on the milkweed. Don't let this happy little larvae fool you. Wait until it starts to get rid of all the milkweed it is eating! Luckily, the frass (a fancy name for insect poop) get bigger slowly. I have found several ways to deal with this disgusting problem. My goal is to find the easiest way to clean the container that reduces the time I have to look at the excretions. Here are some ideas:
1. Use an ice cream container to raise the larvae. You will need about 15-20 small paper plates, a few napkins or paper towels and a bowl to put the milkweed in. Place a small paper plate at the bottom of a 5 gal ice cream bucket. Put the milkweed and caterpillars on the plate, as well as a crumpled, soggy paper towel or napkin. The water filled napkin will provide moisture as well as a drink for the caterpillars. After the larvae are a few days old, begin to clean the cage daily. Simply remove the paper plate, pick out the milkweed with caterpillars and place the leaves on a new paper plate, setting it in the bottom of the ice cream bucket. Add fresh milkweed and a new soggy piece of paper towel. Put the dirty paper plate, old milkweed and all, into this morning's newspaper bag and through away. So easy! Be careful not to overstock the bucket with caterpillars. One pail can hold 4-5 small caterpillars, but in the last few days as a larvae I would only recommend 3 cats per bucket. Once the caterpillar has gone into J formation or spun its chrysalis, another cat can be added to the pail. The concern with too many caterpillars in one pail is that too much frass is produced and the cats can become ill.
2. Mayo jars and peanutbutter jars also work well. These jars (see below) should be lined with a napkin or piece of towel. When cleaning the cage, remove the milkweed leaves that have larvae on them. Roll the napkin up, leaving the remaining chewed leaves and frass to be rolled into the napkin. Replace with a clean napkin, spray to dampen it and return the leaves with larvae to the clean cage. Don't forget to add some fresh milkweed as well. When the larvae are small and less frass is produced, be sure to spray the napkin to moisten the container and give the larvae water.

3. My favorite container is the small aquarium for reptiles (see below). This can be purchased at any pet store. It is light weight plastic and very portable for caterpllar hunting. The floor of the aquarium is the perfect size for one sheet of narrow paper towel. I put the leaves with larvae in a bowl, roll up the paper towel, replace the towel, moisten with a spray bottle, and put the cats back into their clean home, adding fresh milkweed as well.
