"Good Value and Convenient"
I've just ordered 5 packs of these to replace a pack I bought a few months back. Honestly, I can't attest to the efficacy of the plant food within, but these are cheap and cheerful little drip feeders that take the hassle out of having to feed fruiting plants (especially those in hanging baskets). One small issue; sometimes they get blocked with mud. Just keep an eye on them, and if they get blocked, unblock with a paper clip. Alternatively, find a way to suspend them above the soil. I've balanced some of mine in the branches of my bushy tomato plants.