4 ms·
Permethrin is vastly more effective than deet. It lasts for weeks, even across washes and kills basically any insect that touches the sprayed areas. Its so harm
by noonespecial 7y ago
Permethrin is vastly more effective than deet. It lasts for weeks, even across washes and kills basically any insect that touches the sprayed areas. Its so harmless to mammals(1) that ranchers spray it directly on cattle.
It is extremely toxic to marine life and indiscriminately kills insects including beneficial pollinating insects. Use with care.
(1) With some important exceptions, thanks to rileyphone for the reminder.
- rileyphone 7y agoPlease note that permethrin is still toxic to cats.
- noonespecial 7y agoIndeed, so much so that if you have both a cat and a dog, you should not use the standard topical flea treatment on your dog (which contains permethrin) as enough may transfer to your cat to cause serious issues.