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Growing inputs
All Containers›Shop by use case›Growing inputs›The products›Liquid concentrates and spraysShop all growing inputs →
The products

Liquid concentrates and sprays

By Dwight Davis, Founder

On this page11
Concentrate or ready to use is the decision that shapes the whole package.

What is here

Liquid fertilizer, plant food, hydroponic nutrient, pesticide, herbicide and fungicide. Six leaves on one archetype: 250 to 4000 mL, narrow neck, poured.

The concentrate

Diluted by the user before application. It ships less water, it is cheaper per application, and it puts a measuring step and a pouring step in front of somebody holding a strong product.

Which is why the pour standard exists

The continuous coherent stream requirement is aimed exactly at this moment: decanting concentrate into a measuring cap or a sprayer tank without splashing.

The ready-to-use spray

Diluted already, in a trigger bottle, applied directly. No measuring, no decanting, far more water in the freight, and a much better experience for a home gardener.

The shelf serves both

19 trigger sprayers for the ready-to-use half, 18 spouted closures for the concentrate half, and 292 continuous thread caps underneath both.

Light matters here

Many actives degrade in UV, and a product that sits in a shed window for a season has to still be at label strength. The shelf carries 203 HDPE containers, which are opaque, alongside 276 PET.

And chemical resistance decides the rest

The same question the adhesive and finish property covers: the contents attack the container, the liner fails first, and the right answer is a material chosen against the formula rather than the category.

Measure the dose for the user

A dosing chamber or a graduated cap converts "two capfuls per gallon" from an instruction into a mechanism. It is the single biggest improvement available to a concentrate.

Ready to use costs more to ship than it looks

A litre of ready-to-use spray is a litre of water with a little product in it. The margin per unit can be good and the margin per pallet rarely is, which is why this half of the category is often a local or pickup business.

The sprayer is a chemical compatibility question

The dip tube, the seals and the spring sit in the product continuously. They fail long before the bottle does, and a trigger that has stopped working is the whole product failing from the user's side.

References

The Davis Pack Supply catalog, measured 18 October 2026. The growing inputs shelf is 1,075 rows: 579 containers and 496 closures, derived from three packaging archetypes across nine leaves. 276 PET, 203 HDPE, 85 glass, 14 PP and 1 LDPE, from 10 to 9,464 mL with a median of 125 and 42 containers at 1 litre or more. The closures include 30 child resistant, 19 trigger sprayers and 18 spouted.
40 CFR 165.25, standards for nonrefillable pesticide containers. A container for a non-hazardous pesticide complies with the DOT provisions applicable to a Packing Group III material. A container of 5 gallons or less holding a liquid pesticide must "allow the contents of the nonrefillable container to pour in a continuous, coherent stream" and minimise dripping. A rigid container of 5 gallons or less for a dilutable product must achieve "at least 99.99 percent removal of each active ingredient" under the prescribed test procedure. law.cornell.edu
Written from 40 CFR 156.10, 165.25 and 157.22, and from the catalog as it stood on 18 October 2026. A pesticide may not be distributed or sold in the United States unless it is registered, and the label is approved as part of that registration; nothing here is a substitute for EPA guidance on a specific product, and whether a given product is a pesticide at all is a determination with consequences.