Josh's Frogs is a leading source of quality aspen excelsior, also known as wood wool. Excelsior is ideal for use in fruit fly cultures as additional surface area for fruit flies, allowing them additional places to climb, mate, and lay eggs.
Using Excelsior in place of coffee filters provides several benefits, including higher fruit fly yields and a more stable culture. Excelsior is also made from renewable resources and is compostable, making Josh's Frogs Excelsior an environmentally friendly, green product.
This bag of Excelsior makes 20 or more fruit fly cultures.
This product ships to your doorstep. Most orders placed before 2pm ET on business days will ship out the same day.
Based on 19 reviews
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I’ve barely made it halfway through the bag. For the price this is a lot of material for cultures. I prefer it over coffee filters etc. I like that it’s natural and when I toss it I hope it biodegrades.
The added surface area allows for fruit flies to have enough spoece to prevent overcrowding. I use this when I make batches of fruit fly cultures. I would recommend this.
Definitely does the job with my cultures. Sometimes it's a bit hard to pull out of the bag but other than that no issues. Have ordered before and will continue to use. Great product.
The order came very fast. and I have already started some new cultures with this and the flies seem to realy like it.
This really is excellent----ever since I switched from the regular excelsior to the fine-grade, I have seen a dramatic increase in FF productivity. Both are great mediums for culture enhancement, but I think the finer grade produces more flies.
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