Merit 75 WSP will treat grubs and other turf pests that moles may occasionally eat, however, we would not recommend insect control as the primary means of treating for moles. Moles' primary food source is earthworms, which are going to be impossible (and unecessary) to eliminate. Our most popular treatment product for moles is Talpirid Mole Bait. Please see our Mole Treatment Guide for more details and tips.
The coverage area of 1 envelope of Merit 75 WSP will depend entirely on the type of pest you are treating and the area that is being treated. Here are some general guidelines:
There are 4 x 1.6 oz water soluble packets in each envelope.
For Turf grass-: 1.6 oz (1 packet) per 8,250 sq ft to 11,000 sq ft.
For Foliar applications of trees, shrubs: 1.6 oz (1 packet) per 300 gal water
For Systemic applications of trees: 1.6 (1 packet) per 24-48 cumulative inches trunk diameter
For Systemic applications of shrubs: 1.6 (1 packet) per 24-48 cumulative feet shrub height
Merit WSP label:
Easy to understand mixing instructions at bottom of page:
We would recommend using Domnion 2L. It is labeled for use on trees for emerald ash borers as a preventative and a curative. This only needs to be done once a year. The mixing ratio is 0.1 to 0.2 fl oz per inch of the trunk diameter. This needs to be mixed in at least 5 gallons of water and poured around the roots of the tree.
When applying Merit 75 WSP as a soil drench applications to trees for Japanese Beetles, Leaf Beetles and other listed pests, it is applied at 1.6 oz (1 packet) Merit 75 WSP per 24 to 48 inches of cumulative trunk diameter.
The amount of water used with Merit 75 WSP is up to you. The manufacturer recommends that you use an amount of water that is easy for you to handle and calculate. Water simply acts as a carrier and it is important that even distribution of the product is achieved. Thus, more water may be used if the applicator feels runoff will not occur and proper penetration of the root zone is achieved. It is recommended that you use at least 5-10 gallons of water per 1,000 sq ft. After the application is complete you can then go back and irrigate the area to help the product penetrate the root systems. Please see the Label for complete application instructions. Keep in mind that each water-soluble packet of Merit 75 WSP treats 12-24 cumulative inches of trunk diameter when treating for trees, and each packet is usually diluted in at least 25 gallons of water, so this may not be the right formulation for you if you are only treating a small area. You may consider Dominion 2L for smaller applications.