I think you might want to make your offer last a little longer. Think about offering it for a month. If I promote it on the GopherHaul show, there is some lag time for viewers to see it and act. Plus I still have to put it together.
I like the concept. It's one of those products, like anti bacterial soap, where you will pay a premium for the safety and security factor, even if it is difficult for the consumer to see that it works.
One of the things you also should consider is creating marketing material for the lawn care business owner to use to help sell this to their customers.
I would suggest get a graphic designer and put together some door hangers and postcards that sell the application of this service and then leave a section on it blank, for the lawn care business owner to put their contact information in.
Also, you could put together a video where it shows a lawn and then cuts to a petri dish.
Show how ecoli grows and then how your product kills ecoli.
The lawn care business owner could then put this video on their site as a way to help further sell the application of this service to their customer.
Next I think you are going to want to find a way to ship larger shipments of this product.
Maybe you can find distributors on here. Maybe the lawn care business owner could become a local distributor of your product?
Or find garden centers to resell it.
We also need to figure out the figures.
How much would this product cost the lawn care business owner to apply it?
How much could they sell the service for?
What profit margin could they make?
If the figures are right, I think you could really be onto something and have this as an upsell for lawn care businesses.
What's your thoughts on all of this?