great for doterra onguard [SEP] i use one of these bottles for doterras onguard cleaner concentrate to clean my kitchen i love it it works great and sprays perfectly the glass seems nice and thickthe other bottle i use for an oil essential oils mixture for wood polish seems to work fine without cloggingupdate these bottles are pretty tough but still no match for a foot drop to my tile floor i bought these eight months ago and i like them so much that i am going to order another set