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๐ฆ Cultivate the buzz: breed smarter, feed stronger!
Josh's Frogs Excelsior is a 9.2oz renewable resource substrate designed to create superior surface area for fruit fly cultures, enabling higher production and more stable breeding environments than coffee filters. Ideal for reptile and amphibian enthusiasts, it supports 20+ cultures per bag and is highly rated by users for durability and effectiveness.








| Customer Reviews | 4.7 out of 5 stars 356 Reviews |
J**N
Lasts a LONG time!
Been using Josh's Frogs Excelsior for years for my fruit fly cultures. This bag lasts a lot more than 20 cultures for me because I don't jam pack my cups with excelsior. Flies breed like crazy and I'm able to feed my dart frogs and spiders! 10/10
N**L
Recommend and will buy again
Quality product!
T**S
The Excelsior culture of choice.
This is my first bag of culture that I have bought, and I got it for the purpose of making fruit fly cultures to feed our frogs. The product arrived on time, and the packaging was undamaged. The product itself was tightly packed into a bag, and upon opening, I noticed that this was way more than I thought I needed. A small pinch of this substance fills a culture quite easily, and I expect this bag to last a long time. I have every intention from buying from this manufacturer again should I need a refill, but I do not anticipate that that will happen for a long time. Highly recommended for this purpose.
D**L
Great product
Great for flightless fruit fly colony. We have dart frogs and this is a must for keeping them supplied with gnats
G**.
Great stuff works as intended.
Really happy. I have raised 3 new cultures in the last few weeks. Put in about 10 to 20 flies and you will have a colony in 10 to 14 days. Also smells good, which is helpful.
R**H
Well done?
Not really the product so much as the experience. This whole experience went professionally, and well. The product being the product, Iโm not sure there could be a bad one.
N**J
A ton of product
Huge amount despite the bag size. We have been using it for fruit fly cultures for months.
M**N
This stuff is all I use for my fly cultures
Buying fruit flies for my 3 dart frogs was getting to be more expensive than the dart frog setup was! Needed to start building my own cultures, and this material came highly recommended by a friend. They weren't wrong! Very lightweight, very easy for the flies to maneuver. The package will definitely make many, many cultures. Will buy again!
Trustpilot
1 month ago
1 week ago