Spider Ex Aerosol Spray 300ml. 5 "Very good product." Barbara 16 December 2017 It's now 3 months since I first sprayed the inside of my new shed. I have checked regularly for spiders and the result is very good, not a spider to be seen. I gave it another spray this week to prevent any winter residing tenants. Very happy with this product. Have sprayed around my home, windows doors etc and none have been seen inside either. There are quite a few on my neighbours door & windows. So can highly recommend if like me you don't want uninvited guests.