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<p>This is the stuff that is used to treat expensive Insect Shield hiking clothing. It can also be used to spray treat chothing and gear. It’s used for that purpose by the US military. It has to be sprayed or soaked into fabric then allowed to dry. Once dry, it is supposed to be completely safe (although it is toxic to cats in liquid form).</p>
<p>It is used as an indoor bedbug treatment (also a spot flea/tick treatment for pet bedding).</p>
<p>It would be easy enough to use this to spray treat the inside of the suitcase, etc. Also, spray treating the mattresses would eliminate them as a potential problem.</p>
<p>You can buy it pre mixed at outdoors stores, but buying the bottle linked above and mixing 2 TBS (1 oz) to 24 ounces of water will let you mix up five spray bottles for the price of one premixed. It goes fast spraying down something the size of a mattress.</p>