Mini Hearth XL (Grey 3806) Fortress (or PTFE-30) is used widely

(or PTFE-30) is used widely for its ability to contain insects and prevent them from climbing smooth surfaces where Fluon (PTFE-30) has been applied

See photos accompanying this product for more recent versions

larger species such as Camponotus and Formica up to 1

Grey color (+4)

The Phalanx takes 3-4 weeks or longer when our volume is heaviest (April thru September

Mini Hearth XL (Grey 3806) Fortress (or PTFE-30) is used widelyReady for Immediate Shipping, this Mini Hearth XL comes as shown in the photo on this page. NEW FEATURE: Replacing our traditional sand coated interior, this formicarium has a vermiculite interior. To go along with a naturalistic look, Vermiculite has special properties of moisture retention. For years it has been used as an incubation material for captive breeding of reptiles.(+$5). ***Modular Design (for more information click this (link)***