Treat Hard Scale Insects Indoors With Our Hard Scale Killer & Let The Both The Larvae & Adult Predatory Beetles Of Chilocorus Nigritus Loose On This Common Greenhouse & Conservatory Pest. The Greedy, Black, Ladybird-like Beetles (use 3-5 Per Plant) Are Effective During Longer Days (march To October) & Operate At Temperatures In Excess Of 18c, So Are Ideally Suited To The Warm Conditions Much Loved By Hard Scale Insects. the Larvae Are Best Suited To Individual Plant Treatments & The Adults Will Return Excellent Clear-up Rates When Applied To Multiple Plants During Severe Infestations. The Adults Are Not Effective In The Winter As They Need Sunlight To Be Active, So Aim To Supplement Your Biological Control By Using Savona Insect Killer Spray Instead Of The Hard Scale Insect Killer Between October & March. Hard Scale Insect Killer Is Available In Two Pack Sizes; 25 Adults Or 25 Larvaeplease Note: The Miniumum Temperature At Which The Predator Is Effective Is 18c. This Live Product Is Despatched To Uk Addresses Only!hard Scale Insect Killer Available In Adult Or Larvae Formadult Predator Is A Black Beetle Which Feeds On Hard Scaleslarvae Also Have The Same Dietavailable In Two Sizes; 25 Adults Or 25 Larvaeuse Between March & Octoberminimum Temperature At Which Predator Is Effective Is 18cuse Indoors In Greenhouse Or Conservatorylarvae Ideal For Treating Individual Plantsadults Will Munch Through Heavy Infestationsuse Savona Insect Killing Spray Between October & March When Days Are Too Short For Predatorhard Scale Insects Turn Leaves Brown & Can Lead To Leaf Dropthis Product Is Exempt From Any Promotionslive Pest Control Deliverybeing A Live Product The Larvae & Beetles Are Ordered Weekly Every Thursday. These Are Then Delivered On Wednesday Of The Following Week For Delivery By The End Of The Week.for Example An Order Placed On A Monday Would Be Ordered On Thursday, Received The Following Wednesday For Del