![\"\"](\"https:\/\/www.chemtica.com\/site\/wp-content\/uploads\/2025\/10\/MCH-Advertizing-sheet-scaled.jpg\")
<\/p>\n<\/p>\n
Directions for application: Staple BEETLEBLOCK-MCH dispensers<\/p>\n
Beetleblock MCH, Available Now! EPA Registered Product 2015, Directly from Manufacturer P222 Beetleblock MCH<\/p>\n","protected":false},"author":1,"featured_media":5305,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/posts\/5185"}],"collection":[{"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5185"}],"version-history":[{"count":32,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/posts\/5185\/revisions"}],"predecessor-version":[{"id":5930,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/posts\/5185\/revisions\/5930"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=\/wp\/v2\/media\/5305"}],"wp:attachment":[{"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5185"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.chemtica.com\/site\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nThe antiaggregation pheromone, BEETLEBLOCK<\/b> MCH<\/b>, is highly effective in
\nrepelling Douglas<\/b> fir<\/b> beetle<\/b>, Dendroctonus<\/b> pseudotsugae<\/b>, and preventing the
\ninfestation of trees by Douglas fir beetle<\/b>. MCH has been used operationally
\nin the Pacific Northwest and Rocky Mountains since 2000 to protect
\nhigh-valued trees and stands from Douglas fir beetle infestation. MCH is
\napplied in the spring before Douglas fir beetle flight, which usually begins
\nbetween late April and mid-May in the interior Pacific Northwest and Rocky
\nMountains depending upon weather and elevation.
\nThe pheromone is formulated in plastic bubble dispensers that are stapled to
\ntrees in a grid pattern in the area to be treated.
\nThe pheromone elutes from the bubble dispensers throughout the main flight
\nperiod which occurs between mid May and early July. Because Douglas fir
\nbeetle outbreaks last several years, stands need to be treated each spring
\nas long as Douglas fir beetle populations remain high.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"